The traditional view is ______ we sleep because our brain is “programmed” to make us do so.

My friend Jack has just sent me an e-mail, _______ me about his travels around the world.

In the near future, more advances in the robot technology _______ by scientists.

Our parents always tell us to believes in        we do if we want to succeed.

The doctor advised Lisa strongly that she should take a holiday but _______ didn’t help.

Miss. Gao _______ in the library for three years. But now she is a teacher.

I'm sorry you've been waiting so long, but it'll still be some time _______ Sundance gets back.

－Have you been to Liuyang?  

－No, I'd like to, _______.

A new bridge _______ across the river in Changsha and it is expected to open next year.

A. is built            B is being built       C. are built       D. has been built

—Must we get everything ready before we go to the countryside this summer?

   —No, you _______.