It shocked us all that little boy hadn’t been separated from that patient, he would have b

发布时间：2020-08-16 06:48:08

It shocked us all     that little boy hadn’t been separated from that patient, he would have been infected with H1N1.   
A. if that
B. that if
C. if
D. that

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A. if that
(答案→)B. that if
C. if
D. that
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