给下面的文具选择正确的答语。
( )—What’s he doing? —He’s _________ books. A.read B. reading C. reads
( ) I like _________ best, because it’s hot, I can swim and eat ice cream. A. fall B. summerC. spring
( )—Where does the rain come from? —It comes from the______. A. soil B. clouds C. sun
( ) Stop at a _________ light. A. red B. yellow C. green
( ) An elephant is much _________ than a mouse. A. longer B. bigger C. smaller