问题
选择题
When the students heard the good news, they jumped _______ in the classroom. [ ]
A. here and there
B. up and down
C. now and then
D. front and back
答案
答案：B
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When the students heard the good news, they jumped _______ in the classroom. [ ]
A. here and there
B. up and down
C. now and then
D. front and back
答案：B