问题
选择题
4 You will succeed in the end ____ you give up halfway.
A．even if
B．as though
C．as long as
D．unless
答案
答案：D
选 D。unless 意为“如果不”、“除非”，用以引导一个条件状语从句。
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4 You will succeed in the end ____ you give up halfway.
A．even if
B．as though
C．as long as
D．unless
答案：D
选 D。unless 意为“如果不”、“除非”，用以引导一个条件状语从句。