Be suspicious about water from other sources, such as ponds, streams, wells, tanks, water
A. brave
B. doubtful
C. quiet
D. careful
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Those with trusting heart will live ______.
It cost much to have a test-tube baby.
A. Right
B. Wrong
C. Not mentioned
If you feel depressed, don't go to ______.
Doctors can't explain the high number of caesareans.
A. Right
B. Wrong
C. Not mentioned