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1. He set up in business____ his own and was very successful. A. in B. of C. on D. by 2. Johns score on the test is the highest in the class; he____ last night. A. must study B. should have studied C. must have studied D. is sure to study 3. Frank almost never received any education____ ? A. would he B. did he C. didnt he D. wouldnt he 4. Even if his letter____ tomorrow, it____ too late to do anything. A. will arrive...is B. should arrive...were C. arrives...will be D. arrives...would be 5. We can hear____ from the back of the room. A. just as good B. just as easy C. just as well D. easily as well 答案： 1. C) 【句意】 他独自一人开始经商，并且做得很成功。 【难点】on ones own 是个常用的介词词组，意为独自；of ones own表示某人自己的，如：I have a flat of my own.我自己有套房子。 | 
