网址:http://m.1010jiajiao.com/timu3_id_2610684[举报]
What are you doing? I’m ________ the ball.
A.play
B.playing
C.played
What are you doing ________?
A.every day
B.once a week
C.next week
What are you doing? I’m ________.
A.dance
B.dancing
C.dances