2.
1 groups
2 body
3 support
4 everyone and everything
5 communication
6 is not
7 reach out

3.
1 moody
2 cruel
3 caring
4 loyal
5 sensitive
6 honest
7 aggressive

4.
1 We were friends while we were travelling overseas.
2 When I was visiting Mark, Sue phoned.
3 It was happening while I was talking to my uncle.
4 When Tom arrived, I was swimming in the pool.
5 They stopped talking when we entered.
6 The exam finished when he said so.
7 While Mary was walking, Tom was singing.

5.
1 until
2 when
3 because
4 while
5 but
6 so
7 Although

6.
1 Martha has known Jane since 2014.
2 Kevin has just had his lunch.
3 My parents have never wanted to travel.
4 Has Harry ever been to France?
5 How long has Jane lived here?
6 Paul has disliked his cousin since childhood.
7 Has Heather just arrived?

7.
1c
2b
3e
4d
5h
6a
7f

8.
1 I'm not sure
2 I feel we should
3 My view is that
4 That's exactly what I think
5 As far as I'm concerned
6 That's a good point
7 I see what you mean, but