Alexander Graham Bell was born in 1847 in Edinburgh, Scotland. His father was an expert in phonetics. (1)_____ a boy , Alexander became interested in sounds and speech . in 1870, The Bells decided to (2) _____ to America. They lived in Boston, (3) ____ Alexander taught in a school for the deaf. There he began experimenting with a machine (4) _____ help the deaf hear .While experimenting with this machine, Bell had an idea, “Why do not use electricity to (5)_____ the human voice from one place to another ? ” He began to work on a new (6) _____ . For years , Bell and his assistant, Thomas Watson , worked day (7) _____ night. They rented rooms in a boarding house . Bell was on one floor , and Watson was on (8) _____ . They tried to send (9) _____ through a wire . Finally, on March 19th, 1876, Watson heard these words very clearly : “ Mr Watson, come here. I want you.”. Watson rushed upstairs, ran (10) _____ Bell’s room, and shouted , “ I heard you ! ”

1. A. Despite

B. During

C. Be

D. As

2. A. leave

B. take

C. move

D. return

3. A. which

B. why

C. when

D. where

4. A. for

B. in order

C. to

D. so that

5. A. go

B. get

C. change

D. send

6. A. invention

B. inventor

C. inventive

D. invent

7. A. by

B. after

C. and

D. or

8. A. others

B. the others

C. another

D. other

9. A. speaking

B. letters

C. speech

D. telegram

10. A. onto

B. into

C. in

D. to

Giải thích cho mình luôn nha