16 You didn't tell us the reason why we have to cut down our daily expenses
17 The day when she left was rainy
18 The reason why the president will come to that city hasn't been told yet
19 Phuong Thao, whose music you like best, is a singer
20 She couldn't come to the party, which is a pity
21 I've sent him two letters, neither of which heh as receive
22 That man, whose name I don't remember, is an artist
23 The reason which you gave yesterday is not valid
24 We enjoyed the city where we spent our vacation
25 One of the elephants that we saw at the zoo had only one tusk
26 I looked at the moon which was very bright that evening
27 My father, whom you met this morning, goes swimming everyday
28 That car, whose engine is very good, belongs to Dr Clark
29 In the class there are 48 students, only a few of whom the teacher knows
30 The pupils haven't done their homework, which is too bad
31 We first met in 1945, when the revolution took place
32 The girl who won the race is happy
33 The taxi driver who took me to the airport is friendly
34 I liked the composition which you wrote
35 The people whom we visited yesterday was very nice
36 The meeting which I went to was interesting
37 The picture at which she was looking was beautiful
38 I apologized the woman whose coffee I spilled
39 The professor whose course I'm taking is excellent
40 The man whose wallet was stolen called the police
