He ________ in American for five years, and now he works in Shanghai.
| A．have worked | B．worked | C．had worked | D．have been working |
─They said that we would take a camping this weekend.
─________ it rains then?
| A．What if | B．What for | C．What about | D．How come |
Many people agree that __________ knowledge of English is a must in _____ international trade today.
| A．the, an | B．a, / | C．the, the | D．/, the |
It is a great concern that the school is now ____ for experienced teachers.
| A．badly in need | B．badly off | C．better off | D．struggling |
-- The cars give off a great deal of waste gas in the streets.
--- Yes. But I’m sure something will be done to ___ air pollution.
| A．reduce | B．remove | C．drop | D．warn |
Every classroom in this modern school is _______ with a new computer.
| A．equipped | B．exchanged | C．fixed | D．placed |