如This is his pen.要照样写：your TVs肯定句 This pen is his.their toys疑问句our theachers否定句
问题描述：
如This is his pen.要照样写：your TVs肯定句
This pen is his.their toys疑问句
our theachers否定句
答
They are your TVs.
Are they their toys?
They are not our teachers.
答
These are your TVs.
Are these their toys?
They are not our teachers.
答
Those TVs are yours.
Are those toys yours?
Those teachers aren't ours.