Speak to your classnate . what can you do?

Поговорите со своим одноклассником.
Что ты можешь сделать?

1. his teacher often speaks to his grandmother.
2. not to ask him about it.
3. they would write a test the following day.
4. he didn't know her name.
5. she could help me.
6. if they went by train.
7. they had a nice house.
8. me why i was tired.
9. they had visited two countries that year.
10. he had seen her today.
11. they hadn't done many exercises the day before.
12. why she was late last Monday.
13. if i went to London the week before.
14. she had cleared her room two days before. 
15. where the book was. 

The tiger is the largest cat species, reaching a total body length of up to 3.3 metres and weighing up to 306 kg. Their most recognizable feature is a pattern of dark vertical stripes on reddish-orange fur with lighter underparts. They have exceptionally stout teeth, and their canines are the longest among living felids, with a crown height of up to 74.5 mm.They are territorial and generally solitary but social animals, often requiring large contiguous areas of habitat that support their prey requirements. This, coupled with the fact that they are indigenous to some of the more densely populated places on earth, has caused significant conflicts with humans. In zoos, tigers have live for 20 to 26 years, which also seems to be their longevity in the wild.