Theprofessorwarnedtiestudentsthatonnoaccount
问题详情：
The professor warned tie students that on no account _____________ use mobile phones in his class.
A. should they B. they should C. dare they D. they dare
【回答】
A
知识点：情态动词
题型：选择题
问题详情：
The professor warned tie students that on no account _____________ use mobile phones in his class.
A. should they B. they should C. dare they D. they dare
【回答】
A
知识点：情态动词
题型：选择题
