用所给词的适当形式填空(七年级英语上册)
1:Isthis__(you)sister?
2:Thisis____(he)father.
3:___(I)fatherisateather.
4:___(she)sisterismyfriend.
5:Theseare____(book)
6:___youLiPing?(be)
7:___theseyourfriends?(be)
8:They___pens.(be)
9:Ilove____(they)verymuch.
10:____sheyoursister?(be)