下列每句的画线部分中有一处错误，找出并改正

1. The doctor asked me to eat some medicine.              

                         A             B                 C

2. You had better to see the doctor.              

                  A           B            C

3. I had my cut cleaning.               

        A         B      C

4. Was a ambulance called by you?               

      A   B                    C

5. Jim was told have a good rest.              

               A        B         C

用显微镜观察标本时，为了便于观察，可以闭上一只眼，用另一只眼观察。