I. Each sentence has a mistake. Find the mistakes and correct them: 1.Do you know the important of self-study?........ ->....... 2.They used to participate in many English Speaking Club in our city. ..........->.......... 3.The examiner asked me how I will use English in the future. .........->......... 4.Her teacher asked her to spend her time to do her homework. ...........->........... 5.I prefer watching TV than listening to music in my free time. ...........->.......... 6.Na is very tired. However, she can't finish her homework before going to bed. ............->......... 7.This house was completely destroyed by the fire. .......->........ 8.I would answer the question immediately if I know the key. .........->......... 9.We want to spend our holiday in a villa by the sea and enjoying sea food. ..........->............