——______is your Chinese teacher?——Mr. Zhang is.

—What do you think of tomorrow’s football match?—_____difficult for us_____ the match. 

“________ do you exercise?” “Three  times a week. ” 

--- ____homework is required for a middle school student every day ?          ---About two hours .                                            

--- _______did it _______ the conductor to check the tickets this morning? --- Half an hour.