1. It be sunny and rainy in spring. 2. Many birds fly south in autumn. 3. People often sit in the shade in winter. 4. There's more rain in autumn than in summer. 5. There isn't any snow in the mountains in winter. 6. The soil rests in spring. 7. Summer is a season of thunderstorms.

It can be sunny and rainy in spring.
Spring is a transitional season, where temperatures can fluctuate, leading to both sunny and rainy weather. Showers are quite common, but there are also plenty of sunny days, especially as the season progresses and temperatures warm up.

Many birds fly south in autumn.
Autumn marks the beginning of the migratory season for many bird species. They fly south to warmer regions where food is more plentiful during the winter months. This migration is a well-known natural phenomenon.

People often sit in the shade in winter.
This statement is not typical. In winter, people usually try to stay warm, and sitting in the shade isn't as common as in summer when the sun is stronger. During colder months, people prefer sunny spots to enjoy warmth rather than seeking shade.

There's more rain in autumn than in summer.
This is often true in many regions. Autumn can bring more rain than summer, particularly in temperate climates. Summer tends to be drier, with occasional thunderstorms, while autumn sees more consistent rainfall as the weather cools.

There isn't any snow in the mountains in winter.
This statement is incorrect. In winter, snow is very common in mountainous areas. Higher altitudes tend to receive snow as temperatures drop, making winter a peak season for snow activities like skiing and snowboarding.

The soil rests in spring.
Spring is actually a time of growth for the soil. As temperatures rise, plants begin to sprout, and soil becomes active again after the colder winter months. Farmers and gardeners often prepare the soil for planting in spring, not for resting.

Summer is a season of thunderstorms.
In many regions, summer is indeed a season for thunderstorms. The heat and humidity of summer create conditions conducive to thunderstorms, especially in places with warm, moist air. These storms are common in late afternoons or evenings when the temperature is highest.