题干
His parents don't allow him ________ computer games. They think they are bad for his studies.
A：play
B：played
C：to play
D：playing
答案(点此获取答案解析）
C
His parents don't allow him ________ computer games. They think they are bad for his studies.
A：play
B：played
C：to play
D：playing
、
是两个不重合的平面，则下列命题中正确的是（ ）
