问题
选择题
They listened to my lecture, but how much did they ________, I wonder? [ ]
A. get in
B. put in
C. take on
D. take in
答案
答案：D
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They listened to my lecture, but how much did they ________, I wonder? [ ]
A. get in
B. put in
C. take on
D. take in
答案：D