Listen to the sentences and complete them with the correct word or words (there will be between 1 and 4 missing).
Spelling is important both in the OET and in your working lives, and this exercise will help you to improve.

The impact of the pandemic on mental health has been significant.
Urban areas often face unique healthcare challenges due to population density.
Hormone levels can affect mood and energy levels.
Chronic stress can weaken the immune system and increase the risk of illness.
The athlete suffered a severe head injury during the game.
Overcoming this challenge will require a collaborative effort from you.
Infants are more susceptible to infections due to their developing immune systems.
The nurse practitioner will assist in your care.
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