After careful research, it was decided that the spaceship should reenter the Earth’s________.
| A．surface | B．air | C．environment | D．atmosphere |
Just as the experts _______ it, this kind of material is not natural, but man-made.
| A．get | B．put | C．make | D．mean |
¾ Are you waiting for a bus from Medical University?
¾ Yes. I arrived here at the bus stop ten minutes ago, but the bus _______.
| A．hadn’t come | B．won’t come | C．didn’t come | D．hasn’t come |
¾ Who invented _______ cell phone?
¾ I don’t know. Maybe _______ European.
| A．the; an | B．the; a | C．/; / |
D．a; the |
¾ Will you spare me a few minutes now?
¾ _______. But I’ll be free in half an hour.
| A．Yes, of course | B．No. I can’t | C．Yes, with pleasure. | D．I’m afraid not |
—I must thank you for taking the trouble to look after my sick mother.
—_______.
| A．With pleasure | B．It doesn’t matter | C．It was no trouble at all | D．By all means |