问题
选择题
I admit that there are problems, _______I don't agree that they cannot be solved.
A．While
B．If
C．In case
D．Before
答案
A
while表“虽然”，引导让步状语从句。
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I admit that there are problems, _______I don't agree that they cannot be solved.
A．While
B．If
C．In case
D．Before
A
while表“虽然”，引导让步状语从句。