—The train is due to leave at 7：50. —________ we fail to arrive there in time? —I'm afraid you'd bet...
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题目内容：
—The train is due to leave at 7：50.
—________ we fail to arrive there in time?
—I'm afraid you'd better go in a hurry.
A．What if B．As if
C．Even if D．Only if
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