A-A+

______ is often the case with children Tom wa

2022-08-05 16:48:55 问答库阅读 170 次

问题详情

______ is often the case with children, Tom was completely better by the time the doctor arrived.
A．It
B．As
C．What
D．which请帮忙给出正确答案和分析，谢谢！

正确答案：B
解析：关系代词代替整个句子，且位于句首只能用as来引导。