选错改错(共5小题；每小题2分，满分10分)
A friend of him went to Americalast week.
A         B             C         D
Did you work out itat lastjust now?
A          B          C        D
Each ofthe studentshavea new desk.
A         B        C        D
Please notputyour socksin your shoes.
A   B      C           D
Did he do something for his ownsafety?
A            B            C       D