问题
选择题
The missing boy was last seen ____ near the river. [ ]
A. playing
B. to be playing
C. play
D. to play
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The missing boy was last seen ____ near the river. [ ]
A. playing
B. to be playing
C. play
D. to play
答案：A