IV. Each of the sentences below has a mistake. Find and correct them. Write your answer in the table below.
46. In my family, children have get permission before leaving the dining table.
47. My father prefers doing DIY than buying things from shops.
48. My daughter, as well as her classmates are joining an international summer camp next Monday.
49. I have just listened to a nice piece of music was composed by Mozart.
50. Our beautiful forests will destroy if we do nothing to preserve them from now on.