The old scientist has made a great contribution the moon.
| A．in explore | B．to explore | C．explore | D．to exploring |
--- Do you mind if I smoke here, madam?
--- . It’s not allowed in public, you know.
| A．Of course not | B．Yes, you can | C．You’d better not | D．No, you can’t |
The football match between Hengda and Quanbei wasand I felt.
| A．exciting; excited | B．excited; exciting | C．excited ; excited | D．exciting; exciting |
Jet Li to Guangzhou for charity . He’ll come back in two days.
| A．goes | B．has been | C．has gone | D．will go |
--- Doctor, ________ should I take this medicine? --- Twice a day.
| A．how often | B．how much | C．how soon | D．what time |
The Math problem is too difficult , we really don’t know ________ to do it .
| A．which | B．where | C．what | D．how |