题目内容
Paul started hiking in 2010 and he has hiked across 11 countries ________.
[ ]
A.
ever since
B.
from then on
C.
right away
D.
at once
答案:A
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题目内容
Paul started hiking in 2010 and he has hiked across 11 countries ________.
ever since
from then on
right away
at once