- What time will Mr. Brown be back to China?
- Sorry, I don't know______.
| A．when did he go abroad | B．why he is going abroad |
| C．how soon will he be back | D．how long he will stay abroad |
My aunt has been a teacher three years ago.
| A．for | B．after | C．from | D．since |
The good news made us very happy.
| A．feel | B．to feel | C．felt | D．feeling |
You need your classroom every day.
| A．to clean | B．clean | C．cleaning | D．to cleaning |
—Why don’t you ask your teacher?—Thanks.I .
| A．will | B．do | C．won’t | D．don’t |
Mike has made many friends since he to China.
| A．comes | B．has come | C．came | D．will come |