--When __________you __________to cough?--Two days ago.A. do; begin B. did ;began C. did ;begin
The story_________is not boring.
—Would you like some bread? —Yes, _________, please. Thank you.
—How much does it take to build the school library? — Four________ yuan.
You return the book now. You can keep it till next week.
Thank you for _______ the door for me.