Sally looks very happy. She ________ have got the first place in the 200-meter race.
A sheep ____on this kind of special grass which usually grows much faster than ____on ordinary.
Forty percent of the students in our class are boys, ____are girls.
They were all very tired, but ___of them would stop to take a rest.
If a student can make what ___has been learned , whether in class or from social practice,he will make steady progress.
----- Is there anyone who is going to the Great Wall? ----______ .