问题

The factory was built in a secret place, around _________ high mountains.

A:which was
B:it was
C:which were
D:them were

正确答案是：

同类题型

In order to let more people pay attention to their plan, they ________ some signs on the wall.

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This is a very interesting book with lots of new words. Please ______ it carefully.

The traditional view is_____we sleep because our brain is” programmed” to make us do so.[ ]

Mr Li, I can’t understand everything in class.—-Don’t worry! I’ll _______ the main points at the end.