Hurry up, Mike. You must get to the airport an hour before the plane _______.
| A．gets off | B．turns off | C．takes off | D．puts off |
Our teacher is coming. Please stop _____ and keep ________.
| A．talking; quiet | B．to talk; quiet |
| C．talking; quietly | D．to talk; quietly |
There are many CD-ROMs in the bookshop. I don’t know ____ to buy.
| A．what | B．which | C．when | D．how |
---Hello, may I speak to Millie?
---Sorry, she isn’t in. She _________ Nanjing.
| A．have gone to | B．has been to |
| C．has gone to | D．has gone |
I_______ the piano for two years.
| A．have bought | B．will buy |
| C．am buying | D．have had |
Helen often ______ a lot of time listening to music.
| A．costs | B．pays | C．takes | D．spends |