下列各组字母中全部是元音字母的是 ____。A. a, e, o, r B. a, i, u, e C. o, u, e, r
—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.