Father often tells me too much time on computer games.
A. don’t spend
B. not spend
C. not to spend
D. not spending
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Jack took an interest in _____ ping-pong soon after he came to China.
A. played
B. playing
C. play
D. palys
Mr Wang ____ be in Nanjing now, he went to Beijing only this morning.
A. mustn’t
B. may not
C. can’t
D. needn’t
This math problem is too difficult. Can you show me________, George?
A. what to work out
B. to work it out
C. how to work it out
D. how to work out it
–May I go to the cinema, Mum?--Certainly. But you ______ be back by 11 o’clock.
A. can
B. may
C. must
D. need