17．I’m ____a diet, since I put ____ weight easily.
| A．in; on | B．on; in | C．in; in | D．on; on |
When we think of communication, we _____ think of using things, talking face to face, writing messages and so on.
| A．shortly | B．probably | C．practically | D．normally |
He says he really can’t ______ to wait another day.
| A．waste | B．afford | C．spend | D．cost |
We were lost in the forest; ______, it became dark and began raining.
| A．still worse | B．worse still | C．more worse | D．worse more |
Although knocked by down by a car, he managed to ______ to his feet.
| A．stand | B．rise | C．run | D．struggle |
How about all of us _______ for a walk after supper?
| A．to do out | B．will go out | C．going out | D．go out |