Fill in the blanks with appropriate words

Fill in the blanks with appropriate words
1 __________ you pass your exam or not depends largely on yourself
2 I can't guess __ she ' ll agree or not
3 __ his wife died is still a secret
4 The boy wonders __ ice floats on water
5 He said __ he had made a mistake
6 ___ I went last night does not concern you
7 The teacher asked me ___ I had been absent from class the day before
8 I wonder ___ I can repair this machine
9 The boy wonders _____ stars there are in the sky
10 I don't know ____ she is living now
11 He wants to know ___ his wife talked to yesterday
12 I hope ___ he 'll pass his exam
13 _____ he 'll return is not sure
14 He refused to do ___ I asked him
15 _____ career you choose is an important problem
16 He wants to know ____ I moved to this city
17 He wants to know ___ I have lived here
18 The clerk aksed me ____ tie I wanted to buy
19 I'm afraid _____ you didn't understand me
20 Do you understand ___ I 've said ?
21 I asked the fruit seller _____ the orange is
22 I didn't understand ____ you did such a silly thing
23 I don't know ____ rang me last night
24 I'm sure ____ he 'll come
25 It seems ___ we have taken the wrong day
26 The police ask me ____ I came back home last night
27 She asks the clerk ___ this hat costs
28 I wonder ____ this tree is
29 I ask the girl ___ she is
30 I'm confident ___ he will succeed