问题
选择题
What an unforgettable experience!I'll write it down _____ it is still fresh in my memory.
[ ]
A. since
B. while
C. after
D. until
答案
答案：B
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What an unforgettable experience!I'll write it down _____ it is still fresh in my memory.
[ ]
A. since
B. while
C. after
D. until
答案：B