( ) --Happy birthday to you! -- . A. You're welcome. B. Me too. C. Thank you.
You can go ______the No.1 bus. A.onB.byC.at
—______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