A.Because she was worried about the birthday party.B.Because she found this history cou

外语类 公共英语 已帮助 人

A.Because she was worried about the birthday party.

B.Because she found this history course very challenging.

C.Because she thought her term paper might be late.

D.Because she had a very hard time sleeping.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗