【题目】––Did you have to do much for the dinner party?
––Helen ________ everything by the time I got home.
A. finished B. was finishing C. would finish D. had finished
在线课程【答案】D
【解析】考查时态。句意：——你必须为晚宴做很多事吗？——我到家时，海伦已经做完了所有的工作。“到家是过去”，“做完是过去的过去”，所以用过去完成时态，答案为D。