1 be
2 can
3 were
4 had
5 their
6 when
7 must
8 did
9 than
10 tend
11 to
12 are
13 able
14 of
15 have
1. The advertising agency is supposed to come up with a new campaign.
2. I know that I ought not to have poked fun at my teacher.
3. I am able to help you find a place to stay.
4. The reporter may have finished interviewing Mike by now.
5. It is doubtful whether the bank will give you such a big loan.
6. You had better deal with the crisis very carefully.
7. The singer might be putting on a show to raise money for the poor.
8. Take your passport in case you are asked to show some form of identification.