When do people need more water？
A. When they are thirsty.
B. When they've just had exercises.
C. When they are sick.
查看答案
How long will people live without water？
A. One day.
B. Two or three days.
C. A long time.
【B7】
A. cup
B. box
C. glass
【B6】
A. in
B. on
C. under
Hubble is a name of the dog.
A. Right.
B. Wrong.
C. Doesn't say.
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