Don’t run down the stairs. It’s .A. safe. B. dangerous C. Here you are.
找出下列句子中的错误,并改正。
Tom _______ things. Now he is making a toy plane.
Li Ming _______ on the _______ floor.
The pupils of our school ______ to visit Liantang Farm tomorrow.
Look! The children are ______ a game under the tree.