If we (have) a positive attitude, we (feel) down when things don't work the way we want them to
have/won't feel
They'll arrive at 7 p.m. ........... the plane is delayed
unless
If you spend it wisely, money can buy happiness. Make this sentence with "unless"
Unless you spend it wisely, money can't buy happiness
If people (work) a thirty-seven hour week, they (have) quite a lot of leisure time
work/have
We’ll get the bus unless we see a taxi first. Make this sentence with "if"
We will get the bus if don't see a taxi first
If you (not/hurry), we (not/get) to the cinema in time.
If you don't hurry, we won't get to the cinema in time
You (be) happier as a country if you (pay) higher taxes
will be/pay
If people (enjoy) their job, they (be) happier in general.
enjoy/are
If you (eat) a balanced diet, you (feel) healthier
eat/will feel