---Hi, Tracy, you looked tired.---I am tired. I______the living room all day.
. --- This book by Tony Garrison is of great use for our course. --- But I think his latest one is______ worth reading.
. --- My son is addicted to drugs. He isn’t hopeless, is he?--- Yes, ______ he mends his way and starts all over.
. The ancient Chinese vases _______ display attracted lots of experts and collectors, some of whom suggested they______ on the next fair.
. Although their new factory building is still under ________ construction, we have already placed _______ order for 200 pairs of shoes.
. _____ you may have, you should gather your courage to face the challenge.