I’ve no idea how much work it is to be _____ a World Expo but I’m sure they’ve done a lot.
| A．in favor of | B．in response to | C．on behalf of | D．in charge of |
—Madam, could you please tell me how to get to the nearest post office?
—_______
| A．That’s all right. | B．Let me think. |
| C．Why not? | D．Well, never mind. |
Entering the room, I found Mary ______at the desk and ______a letter.
| A．Seated；wrote | B．Sitting；written |
| C．Seating；writing | D．Seated；writing |
_________on the main street, the market was busy yesterday.
| A．Located | B．locating | C．being located | D．to be located |
They were surprised that a child should work out the problem _____ they themselves couldn’t.
| A．when | B．where | C．until | D．while |
--- You must obey every word of mine.
--- _____ I don’t?
| A．What if | B．So what | C．How if | D．Only if |