I

23 C

24 A

25 B

26 B

27 D

II

28 He carried out the first experiment with wireless comminication in the attic of his father's villa in Italy

29 It could reach one-half miles

30 England wanted to use it for communication with ship at sea

V

I

31 she said he worked in a bank

32 she told me they went out the night before 

33 she told me she had been waitting for the bus when he had arrived

34 she said she could help you the next day

35 she asked me to help hẻ carry that

II

36 It's very important to keep the environment clean

37 People recycle Old car tires to make shoes and sandals.

38 I haven't spoken to her for three years

39 It is Lan's fifteenth birthday next week.

40 When did you use the pen ?

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