Homework tenth grade (Exercise 1)

Must /may/can't

/couldn't have 

1I am sure he was here. I saw his car in front of the building.
He  been here. 

2A: Where is James? He should already be here, shouldn't he?
B: Yes, he should but I don't know why he isn't here - he missed the bus. 

3I'm not sure if I passed the exam. I don't feel very sure that I passed.
I  passed the exam. 

4A: Last summer I took four exams and failed them all!
B: You  been very disappointed. 

5She speaks excellent French. I'm sure she's lived in Paris for a long time.
She  lived in Paris for a long time. 

6A: Their plane was delayed and they had to wait 36 hours in the airport.
B: They  been very happy with the airline. 

7Someone told me that Mark was in Mexico last week, but I saw him here so he been in Mexico. 

8A: I saw John yesterday - he looked very pleased with himself. He didn't say why but I think he got that job he applied for.
B: He  got that job he applied for. 

9They gave me very little time to do the job. It's possible I'd have finished if I'd worked all night, but I'm not sure.
They gave me very little time to do the job. I  finished if I'd worked all night, but I'm not sure. 

10We agreed to meet yesterday, but when I got there I didn't see him. It's possible he was waiting elsewhere.
We agreed to meet yesterday but when I got there I didn't see him. He waiting elsewhere.