1)
They will serve the dessert to you as soon as you (finish) the main
course.
2) He (will wait) for you until you (come) back.
3) They (will come) to us
again when they (know) our new address.
4) We (will go) to the country tommorow
if the weather (is) fine.
5) We (will be) grateful to you if you (bring) us
something to drink.
6) We (will have) a picnic tomorrow if it (is) a fine
day.
7) You (will be) late if you (do not take) a taxi.
8) We (will not have) dinner
until you (come).
9) If I (come) later I (will be) late for dinner.
10) If he
(knows) the timetable he (will not miss) the train.
11) It (will be) better if you
(come) on time.
12) I wish I (had known) this before.
13) I (would come) to you if
you (did not/live) so far away.
14) If I (had seen) him yesterday i (would have told) him
about it.
15) If I (were) in your place i (would not buy) the tickets
beforehand.
16) If I (had known) that you needed help I (would have helped) you.