—It’s too hot. Would you mind _______ the door? —_______. Please do it now.
Tom _______ his English book in the classroom last Friday.
I really don’t know____________.
It’s _______ to work out the math problem. You needn’t go to ask the teacher.
The blouse ______ me 200 yuan.
Do you find _______ difficult to be independent(独立的)?.