下列句子中有一处错误,找出错误2并改正.
问题描述：
下列句子中有一处错误,找出错误2并改正.
1:(A:What)(B:are) your sister (c:doing)?( )2:He (A:is)playing (B:the)(C:football)( )3:(A:Is)(B:he)brother)(C:making)a kite?( )4:(A:She)often(B:goes to)home (C:at)4:00.( )5:Yao Ming (A:is)a(B:good)basketball（C:play)( )6:They are (A:singing)(B:and)(C:dance).( )
答
are--is
the去掉
he--his
to去掉
play--player
dance--dancing