5. Jenny's engagement ring is enormous! It
have cost a fortune.
a. must
b. might
c. will
A d. should
6. You,
to write them today.
a. should
b. must
c. had
d. ought
7. I hope I.
find it.
c. could
8. Unless he runs, he catch the train.
a. will
b. shall
d. must
a. will
b. mustn't
C. would ...
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