Zero conditional for natural phenomena and weather patterns
Q1. If the sky turns dark, a storm ___
Zero conditional for meteorological signs. Skies darken. Storms gather. Umbrellas are retrieved.
Q2. When autumn comes, the leaves ___ colour
Present simple for seasonal cycles. Seasons turn. Leaves transform. Beauty is transient.
Q3. If temperatures drop below zero, water ___
Zero conditional for phase transitions. Cold arrives. Ice forms. Pipes may burst.
Q4. Birds migrate when the weather ___ cold
Present simple for animal behaviour. Cold comes. Birds depart. Migration is instinctive.
Q5. If you plant seeds in spring, they ___ in summer
Zero conditional for horticulture. Seeds are sown. Growth follows. Patience is rewarded.