单句改错。 (     )1. I'm used to live in the country now. A        B    C        D (     )2. The teacher told us that light traveled faster than sound. A         B               C       D (     )3. They says they will go there by the plane. A           B         C    D (     )4. The patient's family are watching the operation with video. A                 B      C                               D (     )5. The policeman pred the children not to play football on the busy road. A          B               C       D ________ ________ ________ ________ ________