The old man needs our help, ______ ?
Great changes _________ in Tongren in the past five years.
—Can you tell me _________?—I lost my MP3 player.
If it ________ this Saturday, we will ________ for a picnic.
The story is _________ and all of us are _______ in it.
— _______ we clean the classroom at once? — No, you _______. You _______ clean it after school.