问题
选择题
When he saw a ticket on the ground, he stopped . [ ]
A. to pick it up
B. pick it up
C. to pick up it
D. pick up it
答案
答案：A
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When he saw a ticket on the ground, he stopped . [ ]
A. to pick it up
B. pick it up
C. to pick up it
D. pick up it
答案：A