He is very____________ his brother. I can’t tell (分辨)them.
The boys don’t know ___________.
The girl has been lonely since her mother ______________.
-- You used to be short, didn’t you?-- _______. I was the shortest in my class.
I think students should _______ to have at least one hour a day for sports.
This is her sweater. Where is __________? I can’t find it.