问题

I’m afraid that I can’t do it.—Oh, you should believe in yourself. Youwon’t know what you can do______ you try it.

A: help
B: to help
C:helping
D: helped

正确答案是：

同类题型

Not until he retired from teaching three years ago having a holiday abroad.

I like that green T—shirt. ________ is it—It’s fifteen dollars.

Tom’s mother was very angry yesterday because Tom ________ her.

Is this book____—No, it isn’t. _____is on the desk.

Maria, you wore a fancy dress to an outdoor party last night— Yes, and you can`t imagine _________ at that time.