Use the sentences on the left to complete the paragraphs on the right. These sentences are in the order in which they happened - so (a) happened before (b), (b) before (c) etc. But your paragraph
begins with the underlined sentence, so sometimes you need the past perfect.
(a) Somebody broke into the office during We arrived at work in the morning and found
the night
that somebody had broken into the office
b) We arrived at work in the morning
during the night. So we called the police.
We called the police
a) Laura went out this morning
I went to Laura's house this morning and rang
b) Langer doorbell
her doorbell, but
no answer
10 There was no answer.
Out
I met Joe a few days ago
a) loe came back from holiday a few
ays ago
Just
holiday
very well.
He looked very well
aames sent Amy lots of emails
She never replied to them
necrombe
Yesterday James
from Amy
Surprised
lots of emails

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.