5типов вопросов: the boy had to give up his studies

The boy had to give up his studies
Did the boy have to give up his studies?
Why did the boy have to give up his studies?
Did the boy have to give up his studies or his hobby?
The boy had to give up his studies, didn't he?
Who  had to give up his studies?

1. You shouldn't go anywhere alone in unknown city.2. You shouldn't throw away a garbage in parks and on the streets.
3. If you are going to travel to Minsk with children you should know that children can't be on the street after 11 o'clock.
4. You should visit a national library of Minsk. It is a big landmark in this city.
5. You should visit an aqua park in Minsk.
6. You should buy a lot of gifts for your family in Minsk.

1. Вы не должны никуда идти в одиночку в незнакомом городе.2. Вы не должны выбрасывать мусор в парках и на улицах.3. Если вы едете в Минск с детьми, вы должны знать, что дети не могут быть на улице после 11 часов.4. Вы должны посетить национальную библиотеку в Минске. Это большая достопримечательность в этом городе.5. Вы должны посетить аквапарк в Минске.6. Вы должны купить много подарков для своей семьи в Минске.

1. She  (had not learnt) the material well enough and  (got) a bad mark at the exam.
2. She  ( got) a bad mark at the exam because she (had not learnt) the material well enough.
3. I (had known) Sam for about two years when he (got) married.
4. I (had already known) Sam and Rachel when they (got) married.
5. We (gave) the children their presents and they (opened) the parcels at once.
6. We had (hardly exchanged) our New Year presents when the first guests (arrived).
7. When the first guests (arrived) we  (had already given) the children their presents and they were opening the parcels. They were  eager to see what was inside.
8. I walked in the park for about an hour the other day.
9. I saw a fight when I was walking in the park the other day.
10. I had walked in the park and was going home when I saw a fight.