There are many _______ on the farm.
| A．a sheep | B．sheeps | C．sheep | D．sheepes |
Beijing, ______________ capital of China, has _________________ long history.
| A．a, a | B．the, 不填 | C．the, a | D．不填, the |
The teaching building has five floors. My classroom is ______________ the third floor.
| A．on | B．in | C．at | D．to |
—Open the window please, Mike.
—____________? I didn’t hear what you said.
| A．What | B．Pardon | C．Really | D．All right |
----Do you mind if I sit here? ----________. It’s for Mr Brown.
| A．Not at all. | B．Never mind. | C．Better not. | D．Of course |
Never stand up ________ you are asked to.
| A．if | B．since | C．unless | D．when |