Some of the exercises appear to beones that you have done, but after takingsecond look, yo

Some of the exercises appear to be ones that you have done, but after taking second look, you will find that they are different.
A. 不填; the
B. the; the
C. the; a
D. the; 不填

A. 不填; theB. the; the(答案→)C. the; aD. the; 不填解析：考查冠词。you have done这个定语从句修饰的ones,加the表示限定。后一空a second look表示再次看。句意：一些练习貌似跟以前做过的一样，但你再次细看才发现它们并不相同。

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