She is strong__ the piano.
| A．in play | B．in playing | C．at play | D．at playing |
Sir, would you mind nothere, please?
| A．to smoke | B．smoke | C．smoking | D．Smoked |
Miss Green isn’t in the office. Sheto the library.
| A．went | B．was | C．has gone | D．has been |
I didn’t hear your call because Ito music at that time.
| A．listen | B．will listen |
| C．am listening | D．was listening |
---Must we get to the airport before 8 o’clock?
---No, you .The plane takes off at 12 o’clock.
| A．mustn’t | B．needn’t |
| C．wouldn’t | D．shouldn’t |
---Do you knownow?
---.Outside the school gate.
| A．where Kate is waiting for her mother |
| B．where is Kate waiting for her mother |
| C．where Kate was waiting for her mother |
| D．where was Kate waiting for her mother |