Read the table.
Affirmative
Negative
Interrogative
1/you/he/she/it/we/you/they could ...
1/you/he/she/it/we/you/they couldn't ...
Could l/you/he/she/it/we/you/they ...?
Yes, l/you/he etc could.
No, l/you/he etc couldn't.
Short Answers

Gulliver was born in the large family of a farmer. At school the boy learned well, so his father sent him to the university, for three years.  When the young man left the university, he worked with a doctor and learned the doctor's profession. Gulliver decided to learn navigation, too. After four years he began to work on the ship as a ship’s doctor. One day, when the ship was at the  sea for a long
time, there was a great storm. The ship broke to  pieces and only six people got into a small boat.  The men were
tired and couldn’t find  water. Soon the boat turned over and the men were in the water. Five of them were drowned.
But Gulliver swam well, and when he saw the  shore, he swam to it. He got out of the water and slept on the shore
for  many hours. When Gulliver woke up, he found that he was in a country where very, very small people lived. The name of the country was Lilliput. The little people were afraid of the Man — Mountain, as they named Gulliver. When they saw that Gulliver was a kind man, they let him go free. Gulliver lived in the
country for two years and then came back to England.

I think summer is the best season,as it is warm and very beautiful, and it gives us a wonderful opportunity to have a rest. We can go anywhere, spend a lot of time on the bank of the river or the lake lying on fresh green grass, swimming in warm water. We can climb the mountains, play various games, ride a bike, etc. I want to tell about the highest point of my last summer vacations. In July my family went to the wood to have a picnic. We made a fire, prepared meat and put up a tent. While parents were preparing dinner I went into the wood to work up an appetite.The wood this day was beautiful … There was a smell of flowers, honey and wild strawberry in the air. Everything around was green, only trunks of trees were brightly allocated on a dark green background. Birds were chirping their languages, a woodpecker was knocking.And suddenly I heard suspicious sounds … As though someone hissed before me. I looked back and saw … a snake! I held my breath. I didn't remember how it looked because I got frightened and started departing slowly back, and then rushed as soon as possible to our camp. I didn't tell my mother about the event so that she wouldn't worry. Soon, having had dinner and having had fun, we went home.Eh … How quickly time flies! It is a pity that it is impossible to recreate those moments, those feelings which you endured during vacation. But it is necessary to believe that the next summer will be so unforgettable!