In old days, poor peasants were forced ________ for the landlord day and night without pay.

[　　]

He served in the army in ________, when he was in ________.

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A. 1960's; the twenties

B. the 1960s'; his twenties

C. the 1960's; the twenties

D. the 1960's; his twenties

It's two months ________ to our new house.

[　　]

A. since then we moved

B. since we moved

C. that we moved

D. that we have moved

It was ________ we were having breakfast ________ someone knocked at the door.

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________ computers are playing an important part in our daily life?

[　　]

A. Why was it that

B. Why is it that

C. why it is that

D. Why is it

It was at eleven o'clock ________ we got home last night. In fact, it was already eleven o'clock________ we got home.

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It was for this reason ________ her uncle moved out of New York and settled down in a small village.

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It was only when I reread his poems recently ________ I began to appreciate their beauty.

[　　]

It was about 600 years ago ________ the first clock with a face and an hour hand was made.

[　　]

It was not ________ she took off her dark glasses ________ I realized she was a famous film star.

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