she __ often ___ (see) ___ (play) the piano
问题描述:
she __ often ___ (see) ___ (play) the piano
答
is seen to play ,此题是感官动词的被动语态,必须加to
she __ often ___ (see) ___ (play) the piano
is seen to play ,此题是感官动词的被动语态,必须加to