—______ are the pants?—Oh, the black pants? They are only ten dollars.
--- _________ has he taught in the school?---Since he left the college.
--- Must I return the book this week?--- No, you ____________. You can ____________ it for 20 days.
Look! __________ high speed the car is __________! It’s so dangerous.
Father put the ladder(梯子)_________ the tree to pick the apples for me.
--- What a beautiful car! When ________ you ________ it?--- I ________ it for two years.