4. Complete the conversations. Use the past simple or present perfect.
1. A: ......... you ever ........... (see) a shark?
B: No, I haven't. But last year I ............. (swim) with dolphins on holiday.
2. A: How long ............... Ruth ............ (have) stomach ache?
B: It started yesterday. She ........... (not eat) anything since then.
3. A: We ............ (go) to a Japanese restaurant last weekend.
B: Really? I ............. never ............ (try) Japanese food. What's it like?
4. A: James and Tom ........ (be) over 20 minutes late this morning.
B: .............. they ever ........... (arrive) at school on time? They're always late!

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