问题
选择题
As the saying goes, one is never too old to learn. After he _____, he will devote himself to gardening.
A．retired
B．has retired
C．will retire
D．had retired
答案
答案：B
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As the saying goes, one is never too old to learn. After he _____, he will devote himself to gardening.
A．retired
B．has retired
C．will retire
D．had retired
答案：B