问题
选择题
There are many 
children on the playground now.[ ]
A. playing
B. play
C. to play
D. plays
答案
答案：A
搜题请搜索小程序“爱下问搜题”
There are many children on the playground now.[ ]
A. playing
B. play
C. to play
D. plays
答案：A