On this happy occasion, I'd like to say that we are _____ much obliged to you for your kind cooperation.
| A．even so | B．ever so | C．as yet | D．so far |
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 |