Our school has about 100 computers, but only sixty percent ____ used regularly.
| A．is | B．are | C．was | D．were |
The children's excitement as Christmas drew near．
| A．grows | B．tried | C．trying | D．had grown |
During the weekend, the health club is usually full of people to get in shape
| A．try | B．grew |
| C．trying | D．having tried |
Don't phone me between 10:00 and 11:30 tomorrow morning． I a meeting then．
| A．had | B．have |
| C．was having | D．will be having |
1 think we'd better keep to the subject, we'11 waste our time．
| A．and | B．or | C．but | D．so |
—Mum, where's my packed lunch?
一In the kitchen． I you two sandwiches．
| A．make | B．am making |
| C．have made | D．will make |