24.The students were ____ over the ____ problem, listening to the teacher with a

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24.The students were ____ over the ____ problem, listening to the teacher with a

题型：不详难度：来源：

24.The students were ____ over the ____ problem, listening to the teacher with a ____ expression on their faces.
A．puzzled; puzzling; puzzlingB．puzzled; puzzling; puzzled
C．puzzling; puzzling; puzzledD．puzzling; puzzled; puzzling

答案
B
解析
略
举一反三

28. In the coldest of the winter, trees stood with their bare branches(枝干)_________the sky.
A．reaching forB．reachingC．reaching toD．reaching in

题型：不详难度：| 查看答案

30. — Have you ever been to Australia?
— Never, but I have been looking forward _______ such a chance for further study there.
A．to giveB．to be givenC．to givingD．to being given

题型：不详难度：| 查看答案

32._________on the lonely island_________more difficult than they had expected.
A．Survivor…provedB．Surviving…proved
C．Survival…was provedD．To survive…proves

题型：不详难度：| 查看答案

37.After _______ the area for three hours, the police found the truck near a river.
A．searchingB．searching for
C．in search forD．looking for

题型：不详难度：| 查看答案
_____ the general state of his health，it may take him a while to recover from the operation.
A．Given B．To give C．Giving D．Having given

题型：不详难度：| 查看答案
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