下列各句A、B、C、D中有一处错误，请在不改变句子意思的前提下，将正确答案写在题后的横线上。
It’s kind for you to help me with the housework.
A       B       C        D                                
It’s too hot. Why not stay at home and watch TV instead ofplay football.
A              B           C  D                
Although he was very tired, but he still cleaned the classroom before he left.
A           B          C                D    __________
The naughty boy talked so manythat he couldn’t hear the teacher.
A       B   C      D                              
There are twenty more trees to be plant. We have to keep on working.
A          B         C            D