问题
选择题
Next, John Snow ______ the source of the water for these two streets and found it came
from the polluted river.
A. looked into
B. looked up
C. looked after
D. looked around
答案
| A |
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Next, John Snow ______ the source of the water for these two streets and found it came
from the polluted river.
A. looked into
B. looked up
C. looked after
D. looked around
| A |