—Who is the old man talking with your teacher?
—I don’t know. I _________ him before.
| A．was never seeing | B．had never seen |
| C．never saw | D．wouldn’t see |
—You seem to be familiar with London.
—I ______ there for three years. It’s great to be back again.
| A．had lived | B．lived |
| C．have lived | D．live |
"______ 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 |