____is certain is ___prevention is more important than treat

____is certain is ___prevention is more important than treatment .
A.It;that B.What;that C.As;what D.What;what
gdaairq 1年前 已收到1个回答 举报

jeffreyzhu168 幼苗

共回答了13个问题采纳率:100% 举报

B

“____is certain”在句中做主语,主语从句缺少一个主语,需要用What; “___prevention is more important than treatment .”系表语从句,句意与结构完整,只有that,可以这样用

1年前

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