Answer:
1 My neighbors are always having rows.
2 I've tried to get in touch with him, but I think he's changed his address.
3 We don't expect you to win the race, just do your best.
4 She's ambitious; she wants to make it to the top.
5 If I were you, I'd get rid of rubbish in your street.
6 My brother always does knowledge quizzes.
7 Carbon fuel emissions must have an effect on the temperature of the atmosphere, don't you think?
8 Could I make a phone call, please?
9 It took ages to do my homework last night.
10 I didn't like my sister's cat at first, but now I've gotten quite attached to it.
11 Eating a few sweets won't do any harm.
12 I thought he made a good point at the meeting.
13 Sorry I'm late. I got lost!
14 I had a weird dream about you last night.
15 I can't find your watch. I don't have a clue where it can be.