The award ceremony will be ____ live by CCTV tomorrow.
—Why is it ________ so many people enjoy eating on the run?—Of course, the most obvious answer is that fast food is fast.
— Why did the dinner party start so late last night?— It was _____ that caused him to serve dinner an hour later than usual.
---I can’t find Mr. Brown. Where did you meet him this morning?---It was in the hotel _______he stayed. A that B which C where D when
Was it in 1969 _____ the American astronaut succeeded_____ landing on the moon?
It is exactly _____we behave _____has changed the world.