Her mother died last year. ________she has to stand on herself.

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A．At that time

B．Then

C．From then

D．Since then

I' m busy ________ and I can' t go with you .

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In 1960s, many rare animals were ________to China from foreign countries.

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Which do you think is ________, coffee of tea?

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He was the only man ________ after the fire .

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He sat in his ________ chair and read his favorite novel.

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I’d like to know what you ________the plants I gave you.

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Do you have the answers ________these exercises?

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The school always________ concerts in the week before Christmas.

[　　]

They shook hands and said to each other,“Good ________your trip.”

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