—Which of the three optional courses did you like best,Joe?—To tell you the truth, I didn’t like          of them.

—Which one do you want to buy, an ipod touch 4, an ipad 3 or an iphone 5 ?—______. They are too expensive.

______ can gain access to the public library in our city no matter who they are.

When you’re faced with failure，    you need is to take courage and try again．

I had no idea ____ is better, so I took ____ of them.