—______can I get to the park?
—You can go by subway.
A．Where B．HowC．What
—How do they go to school?
—They go to school ______foot.
A．atB．inC．on
There are always ______traffic lights.
A．oneB．twoC．three
Yellow light means “______”．
A．Stop B．GoC．Wait
Drivers drive ______the right side in China.
A．inB．onC．from