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… you leave it at peace just as you found it. _______, animal will be disturbed.

A．However

B．Otherwise

C．Therefore

D．Then

_______ solids expand much less than liquids or gases, the continuous increases can add up to a lot, …

A．Although

B．If

C．Because

D．After

_______ there is a snowstorm or some other bad weather, the mail always comes on time.

A．Because

B．Unless

C．As

D．So

As we all know, we are what we eat. ________, it’s very important for us to form healthy eating habits. _________, bad eating habits are still very common among us students. _______ the fact that bad eating habits will do harm to our health, we students never take it seriously.
A. Nevertheless        B. Therefore          C. Though                D. Thus
A. Otherwise           B. Despite             C. However            D. Afterwards

—Did you buy a dress yesterday?
—No, _____ I liked the color, I didn’t like its style.

A．a(chǎn)s

B．while

C．if

D．since

____ no cash for food, he broke into an old woman's house, hoping to steal some money.

A．Because

B．As

C．Since

D．With

—Did he come back late last night?
—No．It was not yet eight o'clock _____________ he arrived home．

A．before

B．that

C．until

D．when

The time isn’t far away ______ you will have to take the college entrance examination．

A．when

B．a(chǎn)s

C．until

D．since

I don’t know ______ or not the books _____ to the homeless children next month are really useful.

A．if, given

B．whether, to be given

C．whether, giving

D．if, which are given

There is a feeling in me _______ we’ll surely find a cure for Aids.

A．that

B．which

C．of which

D．when