[ 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

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Grammar › ViewChoose the correct modal to complete the sentence.
It’s icy outside, so I’m walking to school instead of riding my bike. I ______________ be late to class.
A. can
B. might
C. had better
D. should
Vocabulary › View
lacking strength of character; irresponsible
A. feckless
B. decry
C. nefarious
D. credence
Grammar › View______ they play football every day?
A. Are
B. Is
C. Do
D. Does
Grammar › View
Our teacher asked us to meet her at the ___________ at 10.30 am.
A. libarary
B. libary
C. libbary
D. library
