【题目】The woman often complain that she does every single bit of housework ________ her husband Bob just does the dishes now and then.
A. whileB. sinceC. whenD. as
在线课程【答案】A
【解析】
考查连词词义辨析。A. while而；B. since既然；C. when当……时；D. as因为。句意：这个妇女经常抱怨说她做每一件家务活，而她的丈夫鲍勃只是偶尔洗洗碗。根据句意可知此处表示对比，故A项正确。