He spends all his spare time collecting . He says that by the end od the next year, he_____ 3,000 pieces.
A. will have collected
B. is going to collect
C. will be collecting
D. is about to collect
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____ Must I make a reservation at an Apple Retaio Store now?___No, you______.You do it later.
A. can't
B. needn't
C. mustn't
D. shouldn't
Professor Zhang,_______ for his informative speech, is warmly received by his students.
A. knowing
B. known
C. to be known
D. having known
She got to know Sam while______ the new P&T products release conference.
A. attending
B. to attend
C. attend
D. attended
_____ in the queue for an hour, she suddenly realized that she had left her passport at home
A. To wait
B. have waited
C. Having waited
D. To have waited