I can’t say which wine is best—it’s a(n) of personal taste.
A. affair
B. event
C. matter
D. variety
网友回答
A. affair
B. event
C. matter
D. variety
解析：
C。it’s a matter of…为英语惯用表达，其意为“是一个……问题”，又如：Of course this must have priority—it’s a matter of life and death. 当然这一点必须优先考虑——这是成败的关键。