If we (practise) hard, we (improve) our English.
practise, will improve
If you (smoke), you (die).
smoke, will die
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
If you (heat) water, it (boil).
heat, will boil
If Betty (have) time in the afternoon, she (go) shopping.
has, will go
She (be able / not) to sleep if she (watch) this scary movie.
will not (won't) be able, watches
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 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