----How about the two of us chatting online?
---- ____ . It’s much cheaper than talking on the phone.
| A．No way | B．All right | C．Why not? | D．very well |
"______ Libya's oil production returns to normal, I guess, it will be fifteen months," said a UN expert.
| A．After | B．That | C．Before | D．Since |
The villagers planted many trees in and around the village, which, _____, provide them with a beautiful scenery and much fresher air.
| A．in turn | B．for instance |
| C．in return | D．for example |
Out ______ when the bell rang.
| A．rush the children | B．rushed the children |
| C．were rushing the children | D．the children rushed |
When he was a child, he ______ watch TV whenever he wanted to.
| A．should | B．could | C．must | D．need |
Professor John will give us a lecture on how to learn English, but when and where _____ yet.
| A．hasn’t been decided | B．haven’t been decided |
| C．isn’t decided | D．aren’t decided |