题目内容
My sister _________ here by now, for she took the early train.
A. could have arrived
B. must have arrived
C. ought to arrive
D. ought to have arrived
D
A项的意思是“本来能到达但没有到达”;B项表示猜测,“肯定到了”;C项是指现在应该到达。只有D项的意思是“应该已经到达”,符合题意。
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