[ Modals ]
We __________ pollute rivers. It kills fish.
A. don’t have to
B. mustn’t
C. should
D. can
Select your answer:

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Articles › ViewThe case is really heavy. Can you give me …hand?
A. –
B. a
C. the
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People can make new things from old things there.
A. a stationery store
B. a recycling plant
C. a library
D. bank
