1.They have studied English since 8 years.2.The1.They have studied English since 8 years.2.The class has ended for ten minutes.两个句子改错.很着急

问题描述:

1.They have studied English since 8 years.2.The
1.They have studied English since 8 years.
2.The class has ended for ten minutes.
两个句子改错.很着急

1把since改为for2.把ended改为been ending