Despite a very tight schedule, everyone who came to the meeting agreed that at least one day should be （）for sightseeing.

This entrance is in （）use：do not block it.

A.constant
B.tender
C.creative
D.critical

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I guess Professor Wang hasn't finished grading the papers yet. If he had, he would not keep us in （）.

A.suspense
B.trouble
C.doubt
D.wonder

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