Cook was a strict but good captain, _________ who, usually, took care of the sailors on his ship.
Although swimming is his favorite sport, yet he doesn't like _____ today.
Saying always has less difficulty than _____.
_____ his homework, he went out to play.
_____ from the top of the hill, the lake is just like a mirror.
We walked as fast as we could _____ to catch the train.