The boy does not do well in his lessons because he is too (play)

The boy does not do well in his lessons because he is too (play)
The boy does not do well in his lessons because he is too (play)

The boy does not do well in his lessons because he is too (play)
playful爱嬉戏的

playful 应该吧。

这个男孩学得不好，因为他太贪玩了