The split between humans and living apes is thought by some scholars ____ 15 to

题型：专项题难度：来源：

The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.[ ]
A. to occur
B. occurring
C. to have occurred
D. having occurred

答案

举一反三

He seems __________ what he is looking for.   [     ]
A. to have forgotten
B. to forget
C. forgetting
D. being forgotten

题型：吉林省期中题难度：| 查看答案

Do let your mother know all the truth. She appears ________ everything. [     ]
A. to tell
B. to be told
C. to be telling
D. to have been told

题型：同步题难度：| 查看答案

Leonardo da Vinci(1452 - 1519)         birds kept in cages in order to have the pleasure of setting them
free.   [     ]
A. is said to be buying
B. is said to have bought
C. had said to buy
D. has said to have bought

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The crowd cheered wildly at the sight of Liu Xiang, who was reported       the world record in the
110-metre hurdle race.[     ]
A. breaking
B. having broken
C. to have broken
D. break

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Tom pretended          it, but in fact, he knew it very well.
A. not listen to
B. not to hear about
C. not to have heard about
D. to be not listening to

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