13. If you______ (heat) water at 100°C,it____(boil).
14.When you____(sneeze), your heart____ (stop) for a millisecond.
15.If you_____ (help) me with my garden, I____ (give) you some money.
16.If the kids___ (get) a perfect score in their exam, their parents___ (take) them to Disneyland.
17.if there___ (be) winter in the Philippines, the Filipinos___ (enjoy) the snow.
18.if there ___ (be) no pandimec, I___(travel) to many places around the world.
19.if he___ (finish) his studies, he___ (graduate) last year.
20.if they___ (wear) their seatbelts, they___ (survive) the car accident. ​