—How about singing songs with me?—I’m sorry I can’t. I help my father with his work. A. have to B. can C. may
—He's the plan. —So am I. It costs and we have no enough time.
There quite a lot of trees on the hill.
—Can you make understood in English?—Yes, I can.
—Look! What's in the tree? — bird, I think.
—I wonder ______ without water. —For about a week.