Look, the children ____________ in the river.A.swimming B.is swimming C.are swimming
( ) This is . A.beijing B. yunnan C Shanghai
( ) These ducks very naughty! A. is B .are C was
( ) Let’s the flowers. A. to water B. water C. watering
( ) What this? A.is B was C are
( ) --- are those? --- They’re boats. A.What B.Where C.How