—____ I swim here?
—I’m sorry. Children ____ swim alone here..
| A．Must, can’t | B．May, must |
| C．Can, mustn’t | D．Can’t, can |
There were about five _______ students in the teaching building during the earthquake, and _______ of them didn’t run out.
| A．hundred; two third | B．hundred two thirds |
| C．hundreds; two thirds | D．hundreds; two third |
—Did you feel lonely when you worked in the west?
—No, I have many hobbies, _____ when I kept a lot of pets then.
| A．hardly | B．usually | C．especially | D．finally |
Mr. Black comes from England, and he has stayed in China for three years. So you can talk with him ________.
| A．either in English or in Chinese | B．not in Chinese but in English |
| C．just in English not in Chinese | D．neither in Chinese nor in English |
It is difficult for us to learn a lesson in life _______ we've actually had that lesson.
| A．when | B．after | C．since | D．until |
One fifth of the work _______ by computer last year.
| A．are done | B．is done | C．were done | D．was done |