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 noise in the background was just static interference there’s no need for concern.
The pH level of this solution is neutral, neither acidic nor basic.
The chemotherapy will blast the cancer cells, hopefully leading to remission.
The bone marrow biopsy revealed abnormal blasts, indicating leukemia.
The oral route of administration is commonly used for medication delivery.
The patient’s symptoms don’t warrant further investigation at this time.
External factors may confound the results of the study.
The doctor’s tone conveyed reassurance and empathy.
Check