2 Perhaps he is waiting outside. He … 3 It's possible she will work late tonight. She …

4 It's likely he was driving too fast. He …

5 It's possible they made a mistake. They …

6 Perhaps he has missed the bus. He …

7 It's possible she has been playing in the snow. She …

8 It's likely we will be leaving tomorrow. We …

9 It's likely he will stay there. He …

10 Perhaps she had been trying to call you. She …

11 It's likely they had seen the film already. They …

12 It's possible he is studying in the library. He …

2 Perhaps he is waiting outside. He may/might/could be waiting outside.

3 It's possible she will work late tonight. She may/might/could work late tonight.

4 It's likely he was driving too fast. He may/might/could have been driving too fast.

5 It's possible they made a mistake. They may/might/could have made a mistake.

6 Perhaps he has missed the bus. He may/might/could have missed the bus.  

7 It's possible she has been playing in the snow. She may/might/could have been playing in the snow.

8 It's likely we will be leaving tomorrow. We may/might/could be leaving tomorrow.  

9 It's likely he will stay there. He may/might/could stay there.  

10 Perhaps she had been trying to call you. She may/might/could have been trying to call you.

11 It's likely they had seen the film already. They may/might/could have seen the film already.

12 It's possible he is studying in the library. He may/might/could be studying in the library.