Can you tell me the best way ________ the problem?
| A．to solve | B．solving | C．solve | D．solved |
South Korea is ___ the east of China.
| A．in | B．to | C．on | D．at |
The pupils will go to the museum ___ foot and come back ___ bus.
| A．by; in | B．on; by | C．on; on | D．by; by |
—There are so many cars on the road. You should obey the traffic rules and go ___the zebra.
—OK. I will follow your advice.
A. cross B. across C. through D, around
—There is a large beautiful bridge ___ the river in this town
| A．over | B．on | C．under | D．beneath |
Kate is not good ___ English but she does very well __ Biology.
| A．in; at | B．at; in | C．on; in | D．on; at |