Fill in the Blanks B2 Vocabulary | PracticeOnline version Fill the gaps with the appropriate words by Ruslana Purik 1 raise persuade run improve captivating painkillers 1 . The software engineer had to a series of complex tests to ensure the new application was bug - free before its release . 2 . Jennifer was eager to run a marathon and had been training for months to her stamina and endurance . 3 . The nonprofit organization aimed to run a charity event to funds for children's education in underprivileged areas . 4 . In her free time , Maria loved to decompress by reading classic novels and getting lost in the storytelling . 5 . The politician delivered a compelling speech to voters to support her campaign . 6 . The doctor prescribed strong to alleviate ( ? ? ? ? ? ? ? ? ? ) the patient's post - surgery pain .