单项选择题

We desire that the tour guide（）us immediately of any change in plans.

A. has informed
B. informed
C. informs
D. inform

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单项选择题
The last place（）in the factory was the tool room.

A. we visited
B. where we visited
C.that visited we
D. we visit
单项选择题
A programmed computer begins to show on its screen the figures you need（）

A. when switched on
B. switched on
C. to be switched on
D. being switched on
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