The company designed a new car last month and about 500 cars of this type in the factory next month.
| A．were produced | B．will produce |
| C．have been produced | D．will be produced |
I told you that you shouldn't waste your time playing the computer games,_____________?
| A．didn't I | B．did I | C．should you | D．shouldn't you |
If human beings had been a bit less greedy and cruel, more birds and animals _______dying out.
| A．ought to avoid | B．could have been avoided |
| C．should have avoided | D．might have avoided |
With a lot of difficult problems____________, the manager felt worried all the time.
| A．to settle | B．settling |
| C．settled | D．being settled |
--Was Tom there when you arrived?
--Yes, but he___________ home soon afterwards.
| A．had gone | B．has gone | C．is | D．went |
—Look at these tracks. It __________ be a wolf.
—It needn't be. It ___________ be a fox.
| A．must; could | B．may; might |
| C．need; must | D．could; need |