A-A+
A.She knows he's very busy.B.He's already help
问题详情
A.She knows he"s very busy.
B.He"s already helped her enough.
C.He doesn"t know enough chemistry.
D.She doesn"t need any help.
参考答案
正确答案:C
解析:W没有让M帮她写化学实验是因为M从来没有上过化学课(take chemistry),恐怕W对M帮忙的结果不满意,因此正确答案是C。