English is useful. Let’s try _______ best to learn it well.A. us B. our C. ourselves
— Kate, do you know ____ it is from here to the post office? — About twenty minutes’ walk.
My sister showed ____ last night.
Mr. Li is one of ____ in our school.
Don’t swim here, or you may be ____ .
— What will the weather be like tomorrow? — It might be ____ .