Failure hurts grownups and children, but it can make a ________ contribution to your life once you learn to use it.
| A．positive | B．thorough |
| C．enjoyable | D．chief |
---Believe it or not, I have met him before.
---No kidding? ______ you’ve never mentioned it?
| A．What if | B．What for |
| C．How come | D．How about |
It is our duty to try to ______ production and reduce the number of things we make and buy.
| A．cut back on | B．put up with |
| C．hold on to | D．run out of |
Our factory has been developing rapidly this year. This year’s production is five times _____ it was ten years ago.
| A．that | B．what | C．which | D．as |
We should produce less things from raw materials, _____ is growing smaller and smaller.
| A．whose supplies | B．the supply of which |
| C．which supply | D．the supply of whom |
As fuel prices rose, bus companies raised their fares and _____.
| A．so did the airlines |
| B．nor did the airlines |
| C．so the airlines did |
| D．nor the airlines did |