Complete the following sentences using the zero or first conditional.

Alright class, let's complete these conditional sentences. Remember, the zero conditional is used for general truths or habits, while the first conditional is used for possible future events. Here are the completed sentences with explanations: 1. If you **drop** an apple, it **falls**. * This is a zero conditional sentence because it states a general truth. The present simple tense is used in both clauses. 2. I **get** tired if I **work** too much. * This is also a zero conditional. It expresses a cause-and-effect relationship that is generally true for me. Present simple in both clauses. 3. Water **boils** if you **heat** it to 100°C. * This is a zero conditional because it describes a scientific fact. Again, both clauses use the present simple. 4. I **will phone** my friend if I **have** time today. * This is a first conditional sentence because it describes a possible future event. 'Will phone' uses the future simple, and 'have' uses the present simple. 5. If you **freeze** water, it **turns** into ice. * This is a zero conditional. It is a scientific fact that if you freeze water it will turn into ice. 6. If it **rains** today, I **will stay** at home. * This is a first conditional. It's a possible future scenario. If it rains (present simple), I will stay (future simple). Let me know if you have any other questions!