I
1.B
2.D
3.A
4.D
II
1D
2.A
3.B
4.A
C.
I.
1,A
2.D
3.B
7.C
II.
1. had finished
2.had seen
3. carelessly
4. unhealthy
D.
I.
1.T
2.F
3.T
4.F
II
1.It is used to send multiple messages over a single wire
2.It is used to draw the shape of the sound waves
3.In 1876 while Bell was at one end of the line , and Watson worked on the telephone in other room. The first transmitted words were, " Mr Watson, come here. I want to see you "
