—Where is our English teacher?
—She is in the classroom, the exercises the students have done at home.
A. explaining; /
B. explaining; for
C. explained; to
D. explained; from[
网友回答
(答案→)A. explaining; /
B. explaining; for
C. explained; to
D. explained; from[
解析:可联系答.案.网客服索取。