怎样向别人介绍你的朋友:A.My name is Bai Ling. B.This is Bai Ling.
There is a picture _____ a bike.A.in B. of C. at
In the USA, people on bikes must ____ a helmet.A. on B. put on C. wear
There are always three lights: red, yellow and ______.A. green B. blue C. orange
How do you get to the USA ________ China?A. for B. to C. from
How can I ______ the zoo?A. gets to B. to get to C. get to