-- It's so cold! Why are your windows still open? --- Oh, they _______.
—Do you think he can get first prize in jumping? —Impossible now. He ________ to do so,but he has just hurt his leg.
—Baby, you should learn to share with others. Give ________ half of the apple to the little boy looking at you. —I will, Mum.
—Mr.Black, I think you have good taste in ________ art.So would you like to take ________ look at the painting. —Yes, I'd love to.
—Thanks a million for your timely help! —________
The real cause of the problem ________ the poor construction of the bridge.