1．—I was trying to carry out the plan, but I failed.
—Well, you________， for we were uncertain it would do________.(2012•江苏扬州中学高三测试)
A．needn't do that；in fact
B．needn't have done；in effect
C．needn't have；in practice
D．needn't；in time
答案 C [needn't have done 没有必要做某事而做了，为避免重复，答语中可省略动词，只保留助动词have。in fact＝in effect，实际上；in practice在实践中；in time 及时；迟早。句意：——我试图实施这计划，但我失败了。——哦，你本没有必要那么做，因为我们不确定在实践中它是否有效。]
2．Tom has agreed to let me use his computer to surf the Internet, and________I' m treating him to a good dinner at the newly¬built restaurant just around the corner.
A．in charge B．in place
C．in return D．in turn
答案 C [考查介词短语的辨析。in charge负责；掌管；in place在适当的位置；in return 做为回报；in turn反过来。句意：汤姆同意我让我用他的电脑上网，做为回报，我要在拐角处新开的饭馆请他好好吃一顿。]
