If I (find) your ring, I (give) it back to you.
find, wil give
Susan (can) move into her new house if it (be) ready on time.
will be able to, is
If you (smoke), you (die).
smoke, will die
If it (rain) today, I (have / not) to water the plants.
rains, won't (will not) have
Simon (go) to London next week if he (get) a cheap flight.
will go, gets
If you (send) this letter now, she (receive) it tomorrow.
send, will receive
If you (heat) water, it (boil).
heat, will boil
If Betty (have) time in the afternoon, she (go) shopping.
has, will go
If we (practise) hard, we (improve) our English.
practise, will improve
If she (not / study) harder, she (pass / not) the exam.
doesn't study, won't (will not) pass
If I (eat) a lot, I (be) fat.
eat, will be
She (be able / not) to sleep if she (watch) this scary movie.
will not (won't) be able, watches