Topics: Modal Verbs
The book is optional. My professor said we could read it if we needed extra credit. But we_______________ read it if we don’t want to.
A. don’t have to
B. must not
C. cannot
Select your answer:
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Grammar › ViewYesterday at 6 p.m., I ___ a giant pizza.
A. am eating
B. is eating
C. were eating
D. was eating
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You _____ go swimming, because the sea is very cold today.
A. needn’t
B. shouldn’t