问题
选择题
There are a number of empty __________.
A． seat
B． seats
C． sit
D． a seat
答案
答案：B
a number of + 可数名词复数。
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There are a number of empty __________.
A． seat
B． seats
C． sit
D． a seat
答案：B
a number of + 可数名词复数。