13. We ........... (order) pizza tonight if the fridge ....... (be) completely empty.
will order, is
4. If the sky ......... (be) clear tonight, we ......... (see) the stars.
is, will see
5. If customers .......... (not/pay) their bills on time, the company ............ (charge) them a fee.
don't pay, charges
20. The alarm ................ (sound) if you ............ (open) the door without the code.
sounds, open
18. You ............. (save) money if you ........... (cook) at home instead of eating out.
will save, cook
10. If you .......... (mix) flour with water, you .......... (get) dough.
mix, get
17. If you ........... (not / focus) during the lecture, you ........ (not / remember) the key points.
don't focus, won't remember
16. The band .......... (cancel) the concert if the singer ......... (feel) unwell tomorrow.
will cancel, feels
19. If I .............. (not/bring) my notes, I ......... (fail) the quiz.
don't bring, will fail
8. My dog .......... (bark) whenever he ........... (hear) the doorbell.
barks, hears
11. The teacher ......... (not/mark) your paper if you ...... (not/write) your name on it.
won't mark, don't write
1. If you ............. (read) comics, you ........... (find) them entertaining.
read, find
12. If my brother ....... (call) me tomorrow, his car .......... (need) washing.
calls, will need
6. If the history exam ............ (not/be) too hard, I ......... (get) a good grade.
isn't, will get
7. What ........... (your parents / say) if you ........... (cancel) your trip next week?
will your parents say, cancel
2. Unless the train .................. (arrive) late, we ............... (reach) the city before noon.
arrives, will reach
15. If you ......... (heat) metal, it ....... (expand).
heat, expands
14. If my sister .......... (visit) me, I always ........ (take) her to the best cafe.
visits, always take
9. If it ............ (snow) later, I ............ (stay) home and watch a movie.
snows, will stay
3. I .............. (be) delighted when the holidays .......... (start).
will be, start