do you play tennis?   I play it three times a week. 

You can hardly see anything in the dark room, ­­­_____?

—Oh, you have a headache and a cough. __________ have you been like this?— Two days.

------________ are you staying in China? ------For about two months.

--- She’s already been back to Wuxi, ________?--- ________. She is on a visit to Shanghai.