— Dad, must I finish my homework today?— No, you ___ . You ___ do it tomorrow.
A. mustn’t/can
B. needn’t/can
C. mustn’t/must
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— I’m going to school now, mum. Bye!— Bye! It’s cold outside. ___ the door for me, please.
A. Shut
B. Open
C. Air
This TV set is too loud. Will you please ___?
A. turn down it
B. turn it down
C. to turn it down
This is your watch. ___ please.
A. Put away
B. Put on it
C. Put it on
— Mum, may I watch TV now?— No, you ___ finish your homework first.
A.mustn’t
B. must
C.need