找出错误并加以改正。 1.Let's do something help poo

问题：

找出错误并加以改正。

1.Let's do something help poor students return to school.             (     )_____________

     A              B         C                          D

2.His sick grandfather was took to the hospital yesterday.             ( ) ____________

             A                       B      C       D

3.Everyone should make great contributions to look after animals.  ( ) ____________

                    A                 B         C                   D

4.I finished my homework already. I can go climbing with you.     (     ) ____________

          A                                          B            C         D

5.The room was very small for us to live in.                                 ( ) ____________ 

         A               B                 C        D