问题
选择题
Life ____ be much happier if we ____ only be born at the age of 80 and gradually approach 18.
A．will, can
B．will, could
C．would, can
D．would, could
答案
答案：D
本题表示的虚拟的意思，与实际不符，用虚拟结构，主从句的动词都用过去的结构形式，故本题选D。
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