[ Modals ]
At National Library, researchers ____________ talk loudly.
A. may
B. should
C. can’t
D. could
Select your answer:

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Grammar › ViewWe can buy _____ food.
A. many
B. much
C. no
Adjectives and Adverbs › View
He took the exam quickly and ______, and so he made a lot of mistakes.
A. careful
B. careless
C. carefully
D. carelessly
