He made another wonderful discovery, ______ of great importance to science.
| A．which I think is | B．which I think it is |
| C．which I think | D．I think which is |
She said she was glad the difficulty had been _____.
| A．cleared away | B．cleared up |
| C．broken away | D．broken down |
. I used to be able to play well but I'm _____ now.
| A．out of date | B．out of touch |
| C．out of practice | D．out of place |
. As soon as the children were _____, their mother got them out of bed and into the bathroom.
| A．woke | B．waken | C．wake | D．awake |
. Jim was so badly burnt that at first they began to _____ of his life.
| A．despair | B．designate | C．disappoint | D．despise |
The government's strong action demonstrated its _____ to crush the rebellion.
| A．energy | B．resistance | C．courage | D．determination |