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_______ you read the instructions closely, you would know what I _______ referring to now.

A. Had; was　　　　　　　　　　　　　　　　　　　　　　　　　　 B. Should; am

C. Had; am　　　　　　　　　　　　　　　　　　　　　　　　　　 D. If; was

 ________ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.

A. While        　 B. As   　          C. Because　            D. If  

________ the Internet is of great help, I don’t think it’s a good idea to spend too much   

time on it.

A. While        　    B. As      　                 C. Because　         D. If

-Are there any English Story books for us students in the library??　　

-There are only a few, _____.?

　 A. if any 　 B. if there    C. if some 　 D. if has

______ the poem a second time, the meaning will become clearer to you.

　 A. You having read 　 B. While reading  C. When you read 　 D. If reading