14 This machine mustn't be used after 5:30 p.m
15 Luckily for me, my name wasn't called
16 After class, the chalk board is always erased by one of the students
17 The wall must be cleaned before being painted
18 The new pupil was told where to sit
19 I knew that he had been told of the meeting
20 I have never been treated with such kindness
21 His story isn't believed
22 The dam may be broken by a sudden increase in water pressure
23 Books borrowed from the library must be taken good care of
24 I was told about it by a man I know
25 He can never be found at home for he is always on the move
26 Milk is used for making butter and cheese
27 Human life has completely been changed by Science and Technology
28 My Cole used to be visited by John at weekends
29 The river bank is covered by weeds
30 The room was filled by smoke
Mọi người giải giúp mình với ạ mình đang cần gấp ạ, giúp mình nhé 
ai giải giúp mình với!!!!
