150组易混淆概念及易混淆句型对比选择题有答案
　　 1. ①Study hard , _____- you’ll succeed.
　　   ②Study hard,  _____ you’ll fail.
　　   A. unless   B. or   C. but    D. and
　　 2. ①He lived in the city of Beijing  _____ there’s a zhong guan cun.
　　   ②He lived in the city of Beijing and _____ there’s a zhong guan cun .
　　   A. in that   B. in it   C. where   D. wherever
　　 3. ①It’s nine o’clock _____  we got to the station.
　　   ②It’s at nine o’clock  _____ we got to the station.
　　   A. as    B. that   C. when    D. while
　　 4. ①  _____  he said so made us very happy.
　　   ②  ______ he said made us very happy.
　　   A. Which   B. What   C. That    D. it
　　 5. ①Is this bike  ______ she lost the day before yesterday?
　　   ②Is this the bike ______  she lost the day before yesterday?
　　   A. that    B. what   C. the one   D. it              
　　 6. ①  _______ is well known, Hong Kong has been returned to our motherland.

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