( ) I go to school ________ Monday. A. in B. at C. on
( ) These are . A. tigers B. tiger C.duck
( ) 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