The only drawback of the voyage was the ______ sea, which made me very seasick.

Anyone who has spent time with children is aware of the difference in the way the boys and girls response to       situations . 

There was a(n)________silence in the live interview，when no one knew what to say to the audience.

This kind of paper was as soft and light as silk but ______ expensive.

—Did you enjoy yourself at the part—Yes. I’ve never been to ________one before.