---______is this girl?---she is my sister.----______do you spell “sister”?---S-I-S-T-E-R.
Would you mind my sitting here? ______. It’s for your teacher.
Mary, what’s your plan for the coming Saturday? I _____ play table tennis with my father.
My English teacher asked me _____ half an hour _____ English newspapers every day.
Jim is going to run in the race. All of us will go to ______.
I __ interested in the history of China.