1. are playing
2. were discovered
3. to send
4. will locate
5. will help
1. inventors
2. cultural
3. environmental
4. developments
5. healthy
V. 1. known
2. interest
3. hard
4. telephone
1. Who is Alexander Graham Bell?
Alexander Graham Bell is widely known as the inventor of the first telephone
2. When he was 23, Bell emigrated to Canada
3. He took great interest in transmitting the human voice.
4. The first telephone communication was said to have happened between Bell and Watson in 1876 while Bell was at one end of the line, and Watson worked on the telephone in another room.
VII. 1. Nam said he was told to be at school before 7 o’clock
2. Thu said all the students would have a meeting the next week
3. The teacher said all the homework had to be done carefully
4. Her father said to her she could go to the movie with her friend
5. He said he was doing an experiment then