问题
选择题
On my way home, I saw some teenagers _______ a good job in the streets. [ ]
A. do
B. did
C. doing
D. to do
答案
答案：C
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On my way home, I saw some teenagers _______ a good job in the streets. [ ]
A. do
B. did
C. doing
D. to do
答案：C
