Who’s that boy reading in the garden? Is it David?----It______be David. I saw him in the classroom just now.
—Shall we get off the bus here? —Yes. But we won’t get off _______ it stops.
—We’re playing really well this season.We believe we will win! —______
—Mom, I am afraid that I can’t get through the hard time we’re having now. —My boy, be brave and tell yourself ______.
—John, ______ do you visit your grandparents? —Once a week.
I’ll never forget the lesson ______ last year.