题目内容
—I won’t get good grades ________ I study hard.
—That’s ________ everyone is trying his best to study for the exam.
A.until; why B.unless; when C.unless; why D.until; when
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题目内容
—I won’t get good grades ________ I study hard.
—That’s ________ everyone is trying his best to study for the exam.
A.until; why B.unless; when C.unless; why D.until; when