Ex. 14. Recast the following sentences so as to use constructions with the gerund instead of subordinate clauses. Insert prepositions wherever necessary.
1. I reflected that I had seen him only once. -> I reflected seeing him only once.
2. When I reached Leningrad I found waiting for me an urgent request that I should go to my mother's place. 3. I called on my friends before I left. 4. When I left Moscow I corresponded with him. 5. And when you start a thing like that you don't know7 what you're letting yourself in for. 6. When she had turned the last page she decided that she would read the book again. 7. She was a trifle out of breath when she came to the third landing.

In life there are many moments that i remember first, and then quickly forget. but what happened to me this summer, i'll remember all my life.  it was a trip with his family to egypt. and don't we just sunbathed and swam in the red sea and in the pool and was very informative on a trip to luxor is the most important and dramatic place in the history of egypt. it was there that i saw the pharaohs, queens and their families. i visited the tombs: ramses, tutankhamen, queen hatshepsut, nefertiti and nefertari. visited the temple which was built in ancient egypt people with their hands.  it was amazing! my astonishment was boundless! how people many centuries before our era, all it would do without technology and solutions. and these buildings are still standing! i learned a lot of new and interesting! there were many excursions, but this one was special. although the temperature was fifty degrees, there was no fatigue, because it was very interesting. not only to remember what we learned in history, but also to see it with my own eyes and touch it.  i really want the next year to go with his parents in egypt-in cairo, visit the great pyramid of khufu and other pharaohs. they fascinated me!

My mother cooked a tasty dinner yesterday.

* General:

Did my mother cook a tasty dinner yesterday?

* Special:

When did my mother cook a tasty dinner?

What did my mother cook yesterday?

What kind of dinner did she cook?

* Special, to the Subject:

Who cooked a tasty dinner yesterday?

Whose mother cooked a tasty dinner yesterday?

* Alternative:

Did my mother cook a tasty dinner yesterday or the day before yesterday?

Did my mother or my cousin cook a tasty dinner?

* Tag // Disjunctive:

My mother cooked a tasty dinner yesterday, didn't she?