A negative form 19 A professor was lecturing his class one day. He wanted to focus on negation one __________ time. MUCH
20 “The ____________ example is English”, he said, “In English a double negative forms a positive. In some languages, though, such as Russian, a double negative is still a negative. ONE
21 However, there ____________ a language wherein a double positive can form a negative.”
A loud voice from the back piped up, 'Yeah, right. ' NOT BE
A boot on the wrong foot
22 Willy asked his teacher to help him get his shoes on at the end of a busy day. After quite a struggle, Tessa finally got them on. “They're on the wrong ____________, Miss,” mumbled Willy. Staying calm she swapped them over for him. FOOT
23 “They're not my shoes, Miss,” Willy murmurs again. Tessa ____________ hard to keep her cool and asked Willy why he hadn't told her before. FIGHT
24 She then kneeled down again and helped him pull the shoes off. “These aren't my shoes, they're my brother's and Mum told ______________ not to tell anyone.” I
25 Tessa helped him back into his shoes, got him into his coat, wrapped his scarf round his neck. When he ____________, she asked, “Where are your gloves, Willy?” “Oh, Miss, I always put them in my shoes!” DRESS
26 The first form of cryptography was actually the simple writing of a message. Do you know why? Because most people were ____________ to read or write. ABLE
27 In fact, the very word cryptography comes from the Greek words 'kryptos', which mean 'hidden', and 'graphein', which means 'writing'. Cryptography, by its very nature, implies secrecy and ____________. DIRECTNESS
28 Early cryptography included transforming messages into unreadable figures to protect the content of a message while it was carried from one ____________ to another. ADDRESS
29 Nowadays, cryptography has evolved ____________ and today it includes such things as digital signatures, authentification of a sender or receiver and many more. GREAT
30 People wanted to conceal messages since they moved out of caves and started living in groups. The earliest forms of cryptography were found in the cradle of ____________, Egypt, Greece and Rome. CIVILIZE
31 The Greeks, for example, wrapped a tape around a stick, and then wrote the message on the wound tape. Unwinding the tape made the writing ____________. The receiver of the message had a stick of the same diameter and used it to decipher the message. MEANING

The correct word to fill in the blank is more. The sentence should read: "He wanted to focus on negation one more time." The phrase "one more time" is a common way of indicating a repeated action.

The correct word to fill in the blank is perfect. The sentence should read: "The perfect example is English." This is a typical way of introducing an example, especially in academic or instructional contexts.

The correct phrase to fill in the blank is is not. The sentence should read: "However, there is not a language wherein a double positive can form a negative." This is because the sentence is indicating the non-existence of such a language.

The correct word to fill in the blank is feet. The sentence should read: "They're on the wrong feet, Miss." This makes sense in the context of the story, as the boy is referring to his shoes being on the incorrect feet.

The correct word to fill in the blank is tried. The sentence should read: "Tessa tried hard to keep her cool and asked Willy why he hadn't told her before." This matches the narrative, showing Tessa's attempt to remain calm.

The correct word to fill in the blank is me. The sentence should read: "Mum told me not to tell anyone." This matches the context of the boy recounting what his mother said to him.

The correct word to fill in the blank is was dressed. The sentence should read: "When he was dressed, she asked, 'Where are your gloves, Willy?'" This describes the moment after the boy is fully dressed.

The correct word to fill in the blank is unable. The sentence should read: "Because most people were unable to read or write." This refers to a time when literacy was not common.

The correct word to fill in the blank is indirectness. The sentence should read: "Cryptography, by its very nature, implies secrecy and indirectness." This makes sense, as cryptography often involves conveying information in an indirect way to keep it secret.

The correct word to fill in the blank is place. The sentence should read: "While it was carried from one place to another." This refers to the transportation of messages across locations.

The correct word to fill in the blank is greatly. The sentence should read: "Cryptography has evolved greatly." This is a common way of indicating significant evolution or change over time.

The correct word to fill in the blank is civilization. The sentence should read: "The earliest forms of cryptography were found in the cradle of civilization." This refers to early societies in Egypt, Greece, and Rome.

The correct word to fill in the blank is meaningless. The sentence should read: "Unwinding the tape made the writing meaningless." This refers to how the message becomes indecipherable unless one knows the key to decode it (in this case, the stick of the same diameter).