17.________ he could not persuade the other members of the committee,he gave in.A) Provided that B) Seeing that C) On condition that D) In case我拿不准a和b
问题描述：
17.________ he could not persuade the other members of the committee,he gave in.
A) Provided that B) Seeing that C) On condition that D) In case
我拿不准a和b
答
A
答
b
答
B,原因状语从句
答
B