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 researcher needs to index the data for statistical analysis.
The patient showed signs of disease regression after starting the new treatment.
Subsequent to starting the medication, I experienced side effects such as nausea and dizziness.
My goal is to walk for minutes every day to improve my cardiovascular health.
Smoking can impair lung function and lead to respiratory diseases.
The compound contains a mixture of active ingredients to treat multiple symptoms.
The dentist will extract the decayed tooth to alleviate pain and prevent infection.
We must profile patients to identify those at higher risk for complications.
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