Do you know the Three Gorges Dam is the largest hydro-electric dam ever_______?
| A．constructed | B．constructing |
| C．to be constructed | D．been constructed |
He missed ___ gold in the high jump, but will get ___ second chance in the long jump.
| A．the; the |
| B．不填;A |
| C．the; a |
| D．a;不填 |
Jim managed to get into his house without the key. ___?
| A．What for |
| B．Guess how |
| C．So what |
| D．Who knows |
—You have a beautiful garden. May I have a look around it?
—I’m glad you like it.Go ahead if ___.
| A．you want |
| B．you want to do |
| C．you want to |
| D．want |
Some of you have finished Book One. ___, you can go on with Book Two.
| A．If you may |
| B．If you do |
| C．If not |
| D．If so |
—Who should be responsible for the accident?
—The boss,not the workers.They just carried out the order ___.
| A．as told |
| B．as are told |
| C．as telling |
| D．as they told |