. So far nobody has claimed the money ___________________in the library.
| A．discovered | B．to be discovered | C．discovering | D．having discovered |
--- Are you satisfied with what he has done?
--- Not at all. It can’t be ________.
| A．any worse | B．so bad | C．much better | D．the worst |
Last week the students did the experiment in order to_______ if iron rusts in dry air．
| A．look for | B．look at | C．find out | D．find |
--- Did you enjoy the party last weekend at Peter’s home?
--- Oh, sure. It has been years _______ I last enjoyed myself like that.
| A．since | B．before | C．until | D．when |
Mike failed to finish his homework on time, so he tried to avoid _______ his teacher.
| A．meet | B．to meet | C．to meeting | D．meeting |
--- How do you find Mr Li’s lecture?
--- Good indeed. It_______ many problems we have come across in our study.
| A．says | B．talks | C．covers | D．refers |