B. Complete the sentences with the correct modals.
1. Saina ____ (could, couldn’t) speak Japanese when she lived
in Japan, but she’s forgotten most of it now due to lack of
practice.
2. I ___ (could, couldn’t) understand the article we had to read
for assignment. It was so difficult.
3. Joel ___ (can, can’t) play basketball well. He’s champion of
the game.
4. You can borrow my new shoes, but you ___ (must, don’t) get
it dirty.
5. We ___ (musn’t, don’t have to) rush. We’ve got plenty of time
to finish the job.
6. Mike always does really well on exams. He ____ (must, must
have) studied a lot.
7. It ____ (must, must have) (rain, rained) a lot in the night.
There are muddy water outside.