If you read fast every day you improve your English.A. are bound to B. are bounded to C.

问题补充：

If you read fast every day, you improve your English.

A. are bound to

B. are bounded to

C. bound

D. bound to

答案：

A. are bound to

B. are bounded to

C. bound

D. bound to

解析：考查固定词组。Be bound to do sth必定会做某事；句意：如果你每天快速阅读，你一定会提高你的英语。