Nuclear family - семья,состоящая из пары взрослых(родиелей) и их детей.
Extended family - Nuclear family + бабушки,дедушки,дяди,тети,кузины.
1 received
2 when did Columbus discover
3 are playing
4 finishes
5 are
6 has got
7 hasn't done
8 was
9 have solved
10 haven't seen
11 left
12 Have you ever been
1 haven't eaten
2 have made
3 came
4 when did you see
5 have you played
6 have just met
7 was
8 has never visited
9 left
10 felt
11 didn't stay
12 Have you ever played
1 In 1998 by USA, ESA, Kanada and Japan.
2. It visited by astronauts on spacecrafts. Now it is visited by MC-12 with 6 astronauts since 2000 year.
3. I think problems face in limited quantity food and fresh air.
1. better.
2.Less
3.is
4.holds
5.goes
6.
7.to start
8.sending
9.is
+ Our friends skated yesterday.
? Did our friends skate yesterday?
- Our friends didn't skate yesterday.