4.
1 The letter was sent yesterday.
2 The plants are watered every day.
3 This problem will be discussed by the students the next lecture.
4 A new shop will be opened in three days.
5 Last year the house was decorated with flowers.
6 The computer is used every IT lesson.
7 The dress is made from silk.
8 The cat was fed by mom two hours ago.
9 The windows will be cleaned tomorrow.
10 The report was written by Sam last semester.
11 This story was published two years ago.
12 A cinema is a place where movies are shown.
13 I saw an accident yesterday. Two people were taken to hospital.
14 The telephone was invited by Alexander Bell in 1876.
15 Oranges and bananas are imported to Britain every week.
16 New photo was posted by my friend ON Istagram.