—The box is too heavy to carry. What's i
题型:选择题
问题:
—The box is too heavy to carry. What's in it? —Oh, it is ________ books.
A.filled with
B.covered with
C.used for
D.asked for D
—The box is too heavy to carry. What's in it? —Oh, it is ________ books.
A.filled with
B.covered with
C.used for
D.asked for D