—Did you enjoy your holiday?—Yes, it’s the best holiday I ________ these years.
Many soldiers are reported _______ to the drought area to help the local people carry water in the past few weeks.
Three free tickets for the Expo will be given to ________ comes first in the competition.
With the land prices ________, I can’t afford a piece of land big enough to park my car on.
________ is stronger than steel and lighter than a feather is the silk ________ spiders make their webs.
________ you to be the first to solve the structure of DNA?