Focus on the pronunciation of pretest
English definition of “pretest”
pretest (also pre-test)
/ˌpriːˈtest/ verb [T]
› to do a test on a product, piece of equipment, etc. to make sure it works before it is sold or used: We pretested all the equipment before it was installed in the office. Before a questionnaire is finalized, it is always a good idea to get it pretested.