FIRST: They (go) to the party if they (be) invited.
They'll go to the party if they are invited.
FIRST: She (stay) in London if she (get) a job.
She'll stay in London if she gets a job.
FIRST: He (not/get) a better job if he (not/pass) that exam.
He won't get a better job if he doesn't pass that exam.
FIRST: I (buy) a new dress if I (have) enough money.
I'll buy a new dress if I have enough money.
FIRST: She (cook) dinner if you (go) to the supermarket.
She'll cook dinner if you go to the supermarket.
FIRST: They (go) on holiday if they (have) time.
They'll go on holiday if they have time.
FIRST: We (be) late if we (not/hurry).
We'll be late if we don't hurry.
FIRST: She (take) a taxi if it (rain).
She'll take a taxi if it rains.
FIRST: I (not/go) if you (not/come) with me.
I won't go if you don't come with me.
