_______ we admit that there are still some problems about the system of modern education, we don’t mean that it is of no use.
| A．Until | B．While | C．As | D．Unless |
Today everyone arrived earlier than _______.
| A．expecting | B．having expecting | C．to expect | D．expected[来源 |
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 |