21.______ from the moon,the earth is just like a bigsphere.
21.______fromthemoon,theearthisjustlikeabigsphere.A)lookedatB)tolookatC)lookingatD)lo...
21.______ from the moon,the earth is just like a bigsphere. A)looked at B)to look at C)looking at D)looking 答案为什么选A呢，请详细的解答，谢谢了~如果有需要会追加分数~~~
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