Question

【题目】She has to stay at home _________ it's raining outside.
A.because of
B.because
C.so
D.and

Answer 1

【答案】B
【解析】句意：因为外面在下大雨，所以她必须待在家。A .because of因为，后跟名词短语；B .because因为，后跟原因状语从句；C . so因此，表示结果；D .and并且，表示并列。It's raining outside是她待在家的原因，原因状语从句，用because引出。故选B。