This machine, ______for many years, is still working perfectly. A．after which I

题型：不详难度：来源：

This machine, ______for many years, is still working perfectly.

A．after which I have looked	B．which I have looked after
C．that I have looked after	D．I have looked after

答案

解析

which I have looked after 构成一个非限制性定语从句.

举一反三

I want to use the same tools _______used in your factory a few days ago.

A．as was

B．which was

C．as were

D．which

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Is _______ some German friends visited last week?

A．this school

B．this the school

C．this school one

D．this school where

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The number of the people who _______ cars _______ increasing.

A．owns; are

B．owns; is

C．own; is

D．own; are

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The clever boy made a hole in the wall, _______ he could see _____ was going on inside house.

A．which; what

B．through which; what

C．through that; what

D．what; that

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The letter is from my sister, ______is working in Beijing.

A．which

B．that

C．whom

D．who

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