Rephrase the following sentences in as many ways as possible.

1 Perhaps they are at work.
They...may/might/could be at work...
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...