问题
选择题
Put your hands behind your back. Don't speak. We'll ______ in ten minutes. [ ]
A. back
B. be back
C. are back
D. are back to you
答案
答案：B
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Put your hands behind your back. Don't speak. We'll ______ in ten minutes. [ ]
A. back
B. be back
C. are back
D. are back to you
答案：B