The dirty water in the river _____ many problems in the past ten years.
| A．creates | B．created |
| C．was creating | D．has created |
. —Would you mind _______here?
—I’m sorry about that. I’ll go somewhere else.
| A．no smoking | B．not smoking |
| C．no smoke | D．not smoke |
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 |