改错:Please look the blackboard.

改错:Please look the blackboard. please look ----- the blackboard. look at the blackboard,please. Please ( )(look) at the blackboard 第三题：Children,please look the blackboard. please look the blackboard填一介词 Please look the words改错 please look the blackboard这句话哪儿错了 look at the blackboard,please.改为否定句的答案 please look at the blackboard(改为同义句) Children,please look the blackboard. 错在哪里 please look at the blackboard and （）your books