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21 i _____ remember to post this letter.
a) is allowed to
b) must
c) ought
d) is able to
22 _____ we have a few days to think it over?
a) May
b) Was to
c) Ought
d) Need
23 Gerda ____ read when she was four.
a) is allowed to
b) must
c) could
24 ____ I borrow your dictionary for a moment, please?
a) Is allowed to
b) Needn't
с) Would
d) will be able to
d) May
25. She___ go out until she's better.
a) isn't allowed to b) shan't
c) need to
d) is able to
26. Did you get a seat on the train?- No, we___. It was overcrowded.
a) didn't manage to
b) mustn't
c) weren't to
d) can't
27 You ___ read this book- it's really good.
a) are to
b) must
c) won't
d) shan't
28 I ____ ride a bike when l was five.
a) Is allowed to
b) must
c) was able to
d) shall
29 You____tell your parents where you are so that they don't? worry
a) are allowed to
b) will
c) ought to
d) is able to