–Did you ask the guard what happened?--Yes, he told me all ______ he knew.
It’s really very dangerous, one more step, _____ the baby will fall into the well.
The students forbidden _____ after class in WC are prevented _____ after school.
–Michael was late for Mr. Smith’s oral class this morning. --_____? As far as I know, he never came late to class.
–You’re not worried about your English, are you? --No, certainly not. Not Chinese, not math and _____ English.
If it were not for the fact that she _____ sing, I would invite her to the party.