4 Complete the sentences with the correct form of the words in brackets.
1 There is no real age ____________ (different) between Emma and Tracy. They are twins.
2 I left the room quickly as I didn’t want to be involved in a family ____________ (argue).
3 Marion and Henry received a lot of sincere ____________ (congratulate) on their engagement.
4 Not many people are in a steady ____________ (relate) these days.
5 Some people claim that teenagers are ____________ (rebel), but I guess it’s not true in all cases.​