问题
Having been attacked by terrorists, ______.[ ]
A: doctors came to their rescue
B: the tall building fell down
C: an emergency measure was taken
D: warnings were given to tourists
B: the tall building fell down
C: an emergency measure was taken
D: warnings were given to tourists
正确答案是：
同类题型
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It is such that you must on it.
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Your dream won’t come true _______ you know what your dream is.
My sister ______ go to bed _______ my mother came back last night.