Ben has not the least_______ of giving up his research.

His parents,       , didn’t look after him very well—the elbows of his jacket and his boots were badly worn out.

He found it hard for Alan to focus on his teachers for longer than five minutes, _________ if the lecture was boring. 

He began to take political science        only when he left school.

The train stopped ______ at lonely little stations, which resulted in a sleepless night.