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题型：单选题题类：模拟题难易度：普通

— Now I must go _______ I shall be late for the train.
— Have a good trip. Goodbye.

A、or B、so C、and D、but

举一反三

______ (T/t)hey were still working in the field ______ it rained heavil.

— Why didn't you try your best to get on the subway?
— I tried to, but it started moving ______ I could get on it.

It is better to travel 10,000 miles to read 10,000 books.

________ you try, you will never know how difficult it is to finish it.

I didn't come to school yesterday I had to look after my grandmother at home.

A snake bit him he went to see a doctor at once.

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