21.Tom was about to close the windows _____his attention was caught by a bird.
A. when B. if C. and D. till
22.My mother opened the drawer to _________ the knives and spoons.
A. put away B. put up C. put on D. put together
23. Barbara is easy to recognize as she’s the only of the women who ____ evening dress.
A. wear B. wears C. has worm D. have worm
