Great changes ________ in the city, and a lot of factories ________.

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A．have been taken place; have been set up

B．have taken place; have been set up

C．have taken place; have set up

D．were taken place; were set up

The man we followed suddenly stopped and looked as if ________ us to give him a helping hand.

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When a pencil is put in a glass of water, it looks as if it ________.

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Because of falling orders, the company has been forced ________ several hundred workers.

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It was not ________ he came back that ________ the truth.

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Disappointed, I was about to leave ________ something occurred, which ________ my attention.

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The poor boy ________ the test again; in that case, his mother will be very disappointed.

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(2006·北京)

He found it increasingly difficult to read, ________ his eyesight was beginning to fail.

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It's worth ________ before you go otherwise you may not see him when you go there.

[　　]

A．making an appointment

B．to make an appointment

C．of making an appointment

D．of being made an appointment

The man we followed suddenly stopped and looked as if ________ whether he was going in the right direction.

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