151There are still many problems________before we are ready for a long stay on the moon.
A.solving
B.solved
C.being solved
D.to be solved
开始考试练习点击查看答案152The lecture________,a lively question-and-answer session followed.
A.being given
B.having given
C.to be given
D.having been given
开始考试练习点击查看答案153When it comes to________in public, no one can match him.
A.speak
B.speaking
C.being spoken
D.be spoken
开始考试练习点击查看答案154He is thought________foolishly.Now he has no one but himself to blame for losing the job.
A.to act
B.to have acted
C.acting
D.having acted
开始考试练习点击查看答案155There’s a note pinned to the door________when the shop will open again.
A.saying
B.says
C.said
D.having said
开始考试练习点击查看答案156The manager was satisfied to see many new products________after great effort.
A.having developed
B.to develop
C.developed
D.develop
开始考试练习点击查看答案157I have a lot of reading________before the end of this term.
A.completing
B.to complete
C.completed
D.being completed
开始考试练习点击查看答案158Recently a survey________prices of the same goods in two different supermarkets has caused a heated debate among citizens.
A.compared
B.comparing
C.compares
D.being compared
开始考试练习点击查看答案159The witnesses________by the police just now gave very different descriptions of the fight.
A.questioned
B.being questioned
C.to be questioned
D.having questioned
开始考试练习点击查看答案160The traffic rule says young children under the age of four and________less than 40 pounds must be in a child safety seat.
A.being weighed
B.to weigh
C.weighed
D.weighing
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