Everywhere man has cut down __________ forests in order to grow crops, or to use __________ wood as fuel or as building material.
| A．the; the | B．the; 不填 | C．不填; the | D．不填; 不填 |
—Has Sam finished his homework today?
—I have no idea. He ________ it this morning.
| A．did | B．has done | C．was doing | D．had done |
This time next week I’ll be on vacation .Probably I ________ on the beach.
| A．am lying | B．have lain | C．will have lain | D．will be lying |
She was surprised to find the fridge empty; the child _____ everything!
| A．had been eating | B．had eaten |
| C．have eaten | D．have been eating |
This coastal area a national wildlife reserve last year.
| A．names | B．named | C．is named | D．was named |
In 1942，Columbus_______ on the of the Bahama islands, but he mistook it for an island off India.
| A．lands | B．landed | C．has landed | D．had landed |