精选优质文档-倾情为你奉上 练习一 A Figure Back-to-front It was morning. The children were having a (1) lessen in the classroom. The classroom was on the (2) floor. Peter, a boy of Grade One, was doing a sum (算术题) on the (3) . He was not (4) at sums and did not know the (5) . He turned around and (6) Dick, his best friend, standing behind the window. Dick saw that Peter had (7) doing the sum. He (8) the answer
