29 killed (rút gọn của MĐQH "who is killed)
30 wouldn't be
31 thoughful
32 pollutants
33 tell
34 left
35 would have helped
36 Tom, who was interviewed ... energy station, was the last applicant
37 People whose their ... an explosion got threatened
38 Do you know the reason why Tom left school?
39 The photograph which was published in the newspaper was extraodinary
40 Do you remeber when we first met?
