Tipping is neither encouraged nor common, although visitors may reward special services if they wish, _________ 10% of the bill is enough.
A which B where C in which D in which case
Though ______ to see us，the professor gave us a warm welcome。
A. surprise B was surprised C. surprised D. being surprised
—Have you finished the book？
-- No. I’ve read up to _____ the children discover the secret cave.
A. which B. what C. that D. where
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
My mother opened the drawer to _________ the knives and spoons.
A. put away B. put up C. put on D. put together
Tom was about to close the windows _____his attention was caught by a bird.
A. when B. if C. and D. till
