We still cannot persuade him to give up smoking hard we tried.A. soB. howC. thoughD. howe

发布时间：2020-08-16 19:17:06

We still cannot persuade him to give up smoking      hard we tried.
A. so
B. how
C. though
D. however

网友回答

A. so
B. how
C. though
(答案→)D. however
解析：本题考查however引导的让步状语从句。however引导的让步状语从句后面直接接形容词或副词。so和though则不可以。
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