Mr. Green is said _____ an experiment to prove the new method of solving the pro - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Mr. Green is said _____ an experiment to prove the new method of solving the problem when young.

A．to do

B．to have done

C．to be doing

D．to have been doing

答案

解析

由when young可知此处应该用不定式的完成式，表示此动作发生在谓语动作之前。

核心考点

试题【Mr. Green is said _____ an experiment to prove the new method of solving the pro】；主要考察你对现在分词等知识点的理解。[详细]

举一反三

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A．prepare

B．preparing

C．prepared

D．having prepared

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A．Being

B．It being

C．To be

D．It is

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—Well, we have several models_____ .

A．to choose from	B．to choose
C．to be chosen	D．for choice

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A．washing	B．have washed
C．having washed	D．being washed

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A．bought

B．buying

C．buy

D．to buy

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