Three fourths of the people in the country _____ farmers. But three fourths of the land ____ polluted.
| A．are, are | B．is, is |
| C．are, is | D．is are |
─did you play the piano today?
─ For five hours.
| A．When | B．How long | C．How often | D．How soon |
─Could I borrow some money from you, Mom? I mine.
─Sure. Here you are.
| A．have run out of | B．ran out of | C．have ran out of | D．run out of |
They have been doing morning exercises they up.
| A．since, got | B．for, get | C．since, get | D．for, got |
The tourists are all interested the Great Wall.
| A．on visiting | B．to visit | C．in visiting | D．visiting |
─You look so tired, Celia!
─Yes. I volleyball the whole afternoon.
| A．play | B．am playing | C．have been playing | D．will play |