II.Change the following sentences into Indirect Speech. 1.The student said , ”I am in the classroom and am writing.” 2.Mary said, ”I hope it won’t rain.” 3.He said , ”We have plenty of time to do our work.” 4.The teacher said, ”What time did you come to school, William?” III.Change the following sentences into Direct Speech. 1.Paul asked Robert if he had seen his glasses anywhere. 2.Mrs.Turner said that she hadn’t seen Tom that day. 3.The old man asked me to show the way to the station. 4.He said that I would not win the race if I did not train hard.

II.1.The student told me, that he was in the classroom and was waiting

2.Mary said that she hope it wouldn't rain

3.He said that he had plenty of time to do their homework

4.The teacher asked me what time i have come to the school

III.1.Paul asked Robert, "Have you seen my glasses anywhere?"

2.Mrs. Turner said "She haven't seen Tom today"

3.The old man asked me "Could you show me the way to the station"

4.He told me "You won't win the race if you don't train hard"

Объяснение:

1. Some helping in exchange of information is provided by scientific conferences.
2. He demonstrates some insisting on addressing this issue.
3. Being engaged in collecting material for a new article is my occupation now.
4. Arising of this error from the use of approximate methods occurs
often.
5. Aiming at obtaining accurate data on this issue - that is what the efforts of many scientists are focused on.
6. In this connection, other studies in this field are worth mentioning.
7. In this article, suggesting the usage of the same principle when considering more complex systems is done by the author.
8. Preventing a new series of experiments from being conducted  is caused by the lack of accurate data.
9. Trying to answer this question has been performed by scientists for a long time.
10.  The reason for some differing in providing more accurate data lies in this method.

1. By next summer the swimming pool will have been built in this street.
2. By three o'clock my work will have been finished already.
3. By the time you come back the flat will have been to tidied up
4. will the supper have been cooked by the time the children come from school?
5. By next year this house will have been reconstructed
6. I hope by winter this road will have been repaired
7. I think by tomorrow the guestion will have been settled.
8. By the time he comes all traces will have been hidden
9. You can't go to the library at eight tomorrow. By that time it will have been closed
10. They think that by next winter the reconstruction works will have been finished and they'll be able to let the tourists see the gallery.