Complex sentence: After returning to Quebec, he served as executive assistant to the deputy minister of education from 1967 to 1969, held other government positions related to development and planning from 1970 to 1974, and was the assistant deputy minister of transport from 1974 to 1976.
Split into simpler sentences: After returning to Quebec, he served as executive assistant to the deputy minister of education from 1967 to 1969. He held other government positions related to development and planning from 1970 to 1974 and was the assistant deputy minister of transport from 1974 to 1976.