It's quite a time _____Liu Xiang was injured in the foot, b..
It's quite a time _____Liu Xiang was injured in the foot, but we're sure it won't be long _____he returns tothe track.A. after; when B. before; since C. that; when D. since; before
_____ the people have become masters of their country _____ ..
_____ the people have become masters of their country _____ science can really serve the people.A. It is only then; that B. It was that; when C. It is only when; that D. It was when; then