— Isn’t it amazing that I met my pen-friend Jim on May Day? — Really? For how many years _______ each other?
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