He carried __________ the task successfully.
He had an amazing mind  __________  which he searched for explanations of everything.
He died in 1992  __________  a result of an HIV infection that he had got __________ a blood transfusion nine years earlier.
From 1985 to 1995 he worked __________ a primary school teacher in a small village.
He is also well-known __________ his collection of short stories.