Choose the best answer which can complete the sentence.

The headmaster asked the pupils ________ they saw someone go out.

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Choose the best answer which can complete the sentence.

Bob asked his sister ________.

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A．where had she put his ticket

B．where she had put his ticket

C．did she put his ticket where

D．where was she putting his ticket

Choose the best answer which can complete the sentence.

Father told his son that the sun ________ in the east and ________ in the west.

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Visitors ________ not to touch the exhibits.

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Is this the reason ________ at the meeting for his carelessness in his work?

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Facing the ________ situation, the sales manager looked________.

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Choose the best answer which can complete the sentence.

The snake crawled into the hole quickly to ________.

[　　]

A．avoid to be caught

B．escape catching

C．avoid being caught

D．run away from catching

Choose the best answer which can complete the sentence.

There is a sign on the door saying：“________”, because there is a meeting being held in the office.

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Choose the best answer which can complete the sentence.

I ________ when the doorbell rang.

[　　]

A．was happened to go out

B．happened to be going out

C．happened to go out

D．happened to have gone out

Choose the best answer which can complete the sentence.

________ there ahead of time, I started off when it was still dark.

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