2 - правильно
3 - aren't they? - Yes, they are
4 - didn't they? - Yes, they did
5 - can they? - No, they can't
После if в придаточном предложении всегда Present Simple,в главном Future simple.например,во втором
If i dont do some exercise , i will put on weight
1) are you listening
2)not having , are preparing
3)leaves
4)have u ever played
5)are meeting
6)don't work
Bear is a wild animal. It is very strong and dangerous. It lives in the forest. Its head is big. Its neck is short but fat. Its paws are big and very strong. Bear has big clutches. Its eyes are small. Its ears are small too. Bears sleep in winter.
It's half past eight
2It's eleven o'clock
3It's quarter past nine
4It's twenty to one
5It's ten to six
6It'half past four