（ B） Good Boy or Bad Boy

（ B） Good Boy or Bad Boy
Yesterday morning Xiao Ming came into the office .“I’m sorry ,sir.I burnt (燃烧)a piece of paper last night .” said Xiao Ming .
“It doesn’t matter （没关系）.Please be careful when you do anything .” said the teacher .
“ But it’s very important（重要的） for me .It’s my English exercises.” Xiao Ming looked a little worried .
“ Really ” asked the teacher .Then he laughed and said to Xiao Ming ,“ I can give you another piece of paper and you must finish it this evening .” Xiao Ming’s face turned red （变红了）.
( ) 5.The teacher knew Xiao Ming was very ____
A.well B.bad C.good D.fine