问题
选择题
Each of the singers _______ a ________ swimming pool.
A．has; fifty-metres-long
B．have; fifty-metres-long
C．has; fifty-metre-long
D．have; fifty-metre-long
答案
答案：C
each of sb作主语时，相当于三单形式，故第一空选has，而后一空要选的是数词+连字符-名词单数+形容词作定语，故选C