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to ( ) 3. He that he knew nothing about puter, so he began to work hard at it. A. knows B. knew C. realize D. realized ( ) 4. How to puters us better is an important task. A. make。 to 二、用 that, which, who完成下列句子 1. Spaceships is a vehicle are now mainly controlled by electronic. 2. Liu Yang is an astronaut was the first woman astronaut to travel into space. 3. This is the pen I used to write with, my grandfather gave to me. 4. In all the places of interest, there are things tourists should not miss. 5. Mr. Li is a man means what he says. 三 、閱讀理解 Do you know Weibo? Do you