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You have failed two tests.You’d better start working harder, you won’t pass the

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You have failed two tests.You’d better start working harder, you won’t pass the

You have failed two tests.You’d better start working harder, ________ you won’t pass the course.

[]A.

and

B.

so

C.

but

D.

or

试题答案

答案:D

解析:

从句子的意思可判断表示否则,所以用or。