Question

Lucy and Mary are sisters. ________ often help their mother do the housework.

A.She B.He C.They D.We

Answer

C

【解析】

考查代词词义辨析。句意为：露西和玛丽是姐妹。________经常帮助她们的妈妈做家务。She她；He他；They他(她、它)们；We我们。根据语境可知此处表示她们，故选C。