_____ by the clear waters, this forest provides visitors with a wonderful chance to see some endangered native birds in the wild.
| A．Being surrounded | B．Surrounding |
| C．Surrounded | D．To be surrounded |
All that can be eaten _______ eaten up.
| A．are being |
| B．has been |
| C．had been |
| D．have been |
—When will you come to see me, Dad?
—I will go to see you when you _______ the training course.
| A．will have finished |
| B．will finish |
| C．are finishing |
| D．finish |
—How long _______ at this job?
—Since 1990.
| A．were you employed |
| B．have you been employed |
| C．had you been employed |
| D．will you be employed |
—Have you been wasting time on films again?
—_____. I’ve been working and I need a break.
| A．No way | B．Not really | C．I don’t agree | D．I couldn’t agree more |
—English has a large vocabulary, hasn’t it?
—Yes. _____ more words and expressions and you will find it easier to read and communicate.
| A．Known | B．Knowing | C．To know | D．Know |