1. He hasn’t heard from his friend __________ last month.
A. since B. by the end of C. for D. until
答案: A (选择B的同学要注意B选项为过去完成时的时间;选择C的同学要注意, for+时间段; 选择D的同学要注意不是not…until 句型.until+ 句子)
2. I didn’t buy the dictionary yesterday _________ my aunt would give me one.
A. until B. because C. if D. before
答案: B (选择A的同学要注意语境)
3.Help yourself to _________.
A. some chickens B. a chicken C. some chicken D. any chicken
答案: C (选择A的同学要注意chicken当鸡肉讲时不可数)