Nearly _______of the earth___covered by sea.
| A．three fourth; is | B．three fourths; is |
| C．three fourth; are | D．three fourths; are |
The shirt looks very nice. I guess it is _______ 100 yuan.
| A．at first | B．at most |
| C．at least | D．at last |
—I talked with a foreigner for a long time yesterday.
—Great! It’s a good _______ to practice English.
| A．habit | B．chance |
| C．skill | D．exercise |
—When and where _______ we meet?
—Let’s make it 3:00 at my home.
| A．do | B．must | C．shall | D．did |
—Would you please _______ so much noise?
—Oh, sorry, I won’t.
| A．not make | B．don’t make |
| C．not to make | D．making |
Sam spends two hours _______ his homework every day.
| A．to do | B．doing | C．do | D．does |