7. If I (get) a "five", my mum (be) happy.

Solution:

• 7. If I get a "five", my mum will be happy.

Explanation: This sentence is a First Conditional. The condition clause ('If I get a "five"') uses the present simple, and the result clause ('my mum will be happy') uses the future simple. This structure is used to talk about real and possible situations in the future.