—Why are you standing here, Mrs. White?—I'm waiting for my son. He _________ back from school.A. hasn't come B. won't come C. doesn't come
-She is good at English,isn’t she? -_________. She often fails her English exam.
The doctor asked him a few questions _______.
When she ______ the newspaper, Granny _______asleep.
Would you like________ for supper?
-I’m sorry I_______ my exercise book at home. -Don’t forget _______it here tomorrow, please.