当你在电话里介绍自己时,你应该说:________Hello. This is Mark. B. Hello. I am Mark. C. Hello. He is Mark.
There are many ________ over there. A. sweet B. sweets C. egg
There ________ some rice in the bowl.
_________ only four years old,but ______ animal friend is eight.
There are two cats under the tree. One is fat and __________is thin.
It has _____legs _______arms.