眼力大比拼！找出错误并在横线上改正。

( ) 1. Can you help washing the dishes?                                          

                           A       B               C

( ) 2. My family live in a house.                                                      

                     A      B   C

( ) 3. Let's put a circle at usually.                                                       

                      A B         C

( ) 4. How many class are there in your school?                               

               A      B      C

生态影响防护通常以( )的形式来实现。

A．生态补偿
B．替代方案
C．生态影响的避免
D．生态的恢复