The teacher’s name is John Brown . His students call him ________.
Mr. Li asks the students ______ in the river, because it’s too dangerous.
interesting subjects they are !
To live a green life, we should try to save ____ energy and produce__pollution.
-- Here is a schoolbag. Whose is it? -- Oh, it's ________. Thank you.
—What do you think of _______ film about Zhan Tianyou?—It’s __________ good film.