Doing exercise is a good way to yourself from getting sick.
A. stop
B. prevent
C. help
D. work
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Go for a picnic with us ?-That ______ wonderful.
A. sound
B. tastes
C. smells
D. sounds
The manager's office is next to the meeting room on ______ floor.
A. the second
B. two
C. the two
D. second
--______ does your Chinese teacher look like?She is tall and thin.
A. Which
B. Where
C. When
D. What
Advice will be valueless (毫无价值的) _______ it is accepted.
A. unless
B. and
C. or
D. since