问题
选择题
everybody enjoys fresh cut flowers around his house．few people know how to keep them for as long as possible．
A．Because
B．Since
C．While
D．If
答案
答案：C
while引导让步状语从句，表示“虽然”之意。
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everybody enjoys fresh cut flowers around his house．few people know how to keep them for as long as possible．
A．Because
B．Since
C．While
D．If
答案：C
while引导让步状语从句，表示“虽然”之意。