Only when _____ in the afternoon _____ able to leave.
| A．the match was over; they were |
| B．was the match over; were they |
| C．was the match over; they were |
| D．the match was over; were they |
I lost my way. I wonder ________ I can turn in the dark.
| A．who | B．whom | C．to whom | D．for whom |
The professor kept telling us that the future _____ to the well-educated and I kept wondering where I _____ of i
t.
| A．would belong; heard | B．belonged; had heard  |
| C．was belonged; heard | D．was belonging; had heard |
The genetic engineering, ______ progress has been very rapid recently, is perhaps the most important of all the sciences．
| A．to which | B．with which | C．in which | D．for |
I don't think the experiment is _____ failure. At least we have got _____ experience for our
future work on _____ nature.
| A．/; /; / | B．a; /; the | C．a; /; / | D．/; the; / |
---- My neighbor plays loud music late at night．
---- ________．You really should talk to him about it．
| A．You’ve got it right | B．It’s a good point |
| C．This is tricky | D．That’s annoying． |