Christmas is coming soon.Shall we ___the decorations on the tree?
Is this school ______you studied in three years ago?
In the past ten years, our hometown named Yandu(盐都) _____a lot.
How many students in your school have lunch at home? — Only ________ of us have lunch at home.
scientists have done a lot of research on A (H1N1) flu, there are still some cases for further study.[ ]