Everybody went to the party but Li Hong stayed at home her mother was sick.A. whenB. bec

问题补充：

Everybody went to the party, but Li Hong stayed at home her mother was sick.

A. when

B. because

C. although

D. unless

答案：

A. when

(答案→)B. because

C. although

D. unless

解析：连词辨析。A当…时；B因为；C尽管；D除非;如果…不；句意：每个人都去参加了聚会；但是李红待在家里，因为她的妈妈病了。故B正确。