By the end of 2007, about half a million people had flooded into the city, ____ up around 10 percent of its total population.
A. make B. made C. making D. to be made
We must avoid _____ a bad impression on others in public places .
A. to leave B. leaving C. to have left D. leave
The ______ boy was last seen ____ near the East Lake.
A. missing; playing B. missing; play C. missed; played D. missed; to play
– Have you heard that Tom, along with his parents, ______ to Japan?
-- Really? No wonder I haven’t seen him these days.
A. has been B. has gone C. have been D. have gone
Try to spend your time just on the things you find ______.
A. worth doing them B. worth being done
C. worthy of doing them D. worthy of being done
It was foolish of him to ______ his notes during that important test, and as a result, he got punished.
A. stick to B. refer to C. keep to D. point to
