问题
选择题
If they ______, our plan will fall flat.
a. are co-operating b. had not co-operated c. won’t co-operate d. didn’t co-operate
答案
c
略
搜题请搜索小程序“爱下问搜题”
a. are co-operating b. had not co-operated c. won’t co-operate d. didn’t co-operate