Digital cameras are becoming very popular, though some still _____ too much.
| A．pay | B．spend | C．sell | D．cost |
—Don’t _________, my children．Keep working hard and you will win the match．
—Thank you, Mr．Zhang．We’ll try our best．
| A．put up | B．call up |
| C．set up | D．give up |
I know he's been curious about everything, but that's_________．Be patient!
| A．what do kids like | B．what kids like |
| C．what are kids like | D．what kids are like |
Scientists say it may be a few years ______ it is possible to test the new medicine on patients．
| A．because | B．after |
| C．since | D．before |
— Why not riding with us tomorrow afternoon?
— I would rather TV at home．
| A．go, to watch | B．go, watch |
| C．to go, watch | D．going, to watch |
It’s so wise you to organize this trip．It’s necessary us to go on a trip sometimes．
| A．for; of | B．for; for |
| C．of; for | D．of; of |