问题
选择题
You've never heard ______ this new kind of plane, ______ you?[ ]
A. / ; haven't
B. of ; haven't
C. of ; do
D. of ; have
答案
答案：D
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You've never heard ______ this new kind of plane, ______ you?[ ]
A. / ; haven't
B. of ; haven't
C. of ; do
D. of ; have
答案：D
