问题
选择题
It's important for the kids _____ how to save themselves from the earth-quake. [ ]
A. learn
B. learned
C. learning
D. to learn
答案
答案：D
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It's important for the kids _____ how to save themselves from the earth-quake. [ ]
A. learn
B. learned
C. learning
D. to learn
答案：D