( ) (6) 你想介绍姐姐给别人认识,你会说:A. This is my sister. B. This is my friend.
( ) 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