问题
The road is under construction and that is _____ he hasn’t arrived. [ ]
A: the reason at which
B: why
C: the reason which
D: what
B: why
C: the reason which
D: what
正确答案是：
同类题型
159 The doctor who cured my friend ofcancer always serves others________and soul
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Everyone_____dohisbesttomaketheworldsafeandclean
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