I__________ you somewhere before, but your name has escaped me_________.
| A．must see;for a moment | B．must have seen; for a moment |
| C．must see;for the moment | D．must have seen; for the moment |
Cleaning women in big cities get _____ by the hour.
| A．pay | B．paying | C．paid | D．to pay |
What makes the space shuttleis that it takes off like a rocket but lands like an airplane．
| A．exceptional | B．strange | C．unique | D．rare |
---What did you discuss just now?
---We discussed .
| A．when could we meet at Xinhua Bookstore |
| B．where we would have a wonderful outing |
| C．whether we will have a barbecue during May Day |
| D．who is suitable to be the host of the charity |
---It looks heavy. Can I give you a hand?
---___________.
| A．No, thanks | B．Yes, my pleasure | C．No, never mind | D．Yes, I do |
--Haven't you seen Mr. Wilson at the lecture?
--Yes, but he had left _________ I could ask him any questions.
| A．when | B．before | C．after | D．as |