He is a successful businessman and he ___ his success more to luck than to ability.

Though the aerospace industry has made greater progress in China, the scientists will not _________ themselves ___________ this status.

My grandpa often says, “As time _______, my memory seems to get worse.”

The film star is content with herself，and she always likes to ________  her nice figure by wearing tight dresses in public.

He was a teacher before he left his hometown What has________ him since then?