1) They may have seen us.
2) You may be right. I can't be sure.
3) There is nobody in. They may have gone shopping.
4) He drove all the way from Glasgow. It must have been a long journey.
5) You've just had dinner. You can't be hungry.
6) I can't believe that you have crossed that wide river.
7) I can't trust that you are coming to see me tonight.
8) He may be writing his report on wildlife in Moldova.
9) He is a very good specialist. The company must offer him the job.
10) This well educated young man may have went to the finest schools in Japan.
11) There are a lot of sheep in the meadow. The farmers must have got many sheep.
12) She may have called us but we were not in.
13) They may be waiting for you to join them.
