I don’t know the reason ______ you were absent from the meeting, but I am sure that someone will tell me the reason ______ you haven’t told me.
Only when you showed the pass to the guardto come out our school.
When you come into our school yard, you will notice our beautiful school _____by green trees.
Your article is perfect but a little long, so you’d better ______ it in order to make it fit the demand of less than 120 words.
—Why do you look worried? — Because what I am really concerned about is _____my friend can do me a favor or not..
— Which of the two drivers is to blame for the accident? — _______. It’s the cyclist’s mistake.