It is ___ best time to visit the USA.A.\ B.the 答案是A.为什么呀?

the best way of learning a language ___(use) it What is the best ___ to get knowledge? Who first ___ America?---It is Columbus It is ___ sb to do sth. It is ___ than mine,which is rather slow. This is the best way I could think of ___ the students ___ the rules. I tried my best and did it ___the way ___i think is the best. it is best to exercise twice a week中 best 为什么不加the It is quite difficult ____ him ___ good English. Is it time ___ home ? Here's a card___Zhangbing.