单选题
John said his mother (would buy him) a (five-speeds) racing bicycle (for) his (sixteenth birthday).
A、
would buy him
B、
five-speeds
C、
for
D、
sixteenth birthday
【正确答案】
B
【答案解析】
应改为five-speed。当数字与名词之间有连字符时，名词用单数。
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