Last year the number of students who graduated with a driving license reached 200,000, a(n) ________ of 40,000 per year.
| A．amount of | B．quantity |
| C．average | D．number |
—— Has Jack finished his homework yet?
—— I have no idea； he ＿＿＿it this morning.
| A．was doing | B．had been doing |
| C．has done | D．did |
.The traffic in our city is already good and it ＿＿＿even better.
| A．gets | B．got | C．has got | D．is getting |
I’ve finally finished my paper and it ＿＿＿＿＿ me an entire month.
| A．takes | B．took | C．was taken | D．had taken |
Good heavens! There you are! We＿＿＿anxious about you, and we ＿＿＿you back throughout the night.
| A．are； expect | B．were； had expected |
| C．have been； were expecting | D．are； were expecting |
They won’t buy new clothes because they＿＿＿money to buy a color TV set.
| A．save | B．are saving |
| C．has saved | D．were saving |