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

       A. it                             B. which                    C. what                 D. this

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

     A. worked              B. has worked        C. had worked     D. has been working

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

A. until                  B. before               C. after           D. since

－Have you been to Liuyang?　

－No, I'd like to, _______.
A. too　　　　 　　　　 B. either　　　　 　　　 C. yet　　　　 D. though

 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 _______.
　 A. mustn’t B. won’t　　　　C. don’t have to　 D. can’t

 _______ entering the classroom, remember to take your seat and turn off your cell phone.

A. At                 B. From                C. Upon         D. As

 I worked as hard as I could _______ for the final exam.

A. to prepare         B. prepare               C. preparing      D. prepared

 Not only I but also Jane and Mary _______ tired of doing the same thing all the time.

A. is                      B. are                   C. am              D. be

 Getting _______ in the forest is very dangerous.

     A. losing                 B to lose                 C. lost              D. being lost