—What they doing？
—They are flying kites.
A.is B.are C.be
找出不同类的一个单词。
（）（1）A. readingB. playingC. swim
（）（2）A.runningB. pictures C. books
（）（3）A.flyingB. ridingC. taking
（）（4）A.friend B. musicC. talk
（）（5）A.football B. kiteC. basketball
（）—What are you_______?
—I’m playing basketball.
A.doingB. do C. does
（）I’m listening _______music.
A.at B. to C. about
（）Tom is playing _____a toy train.
A.In B. to C .with
（）He likes _____.
A.swimsB. swimming C. swim