What an unforgettable experience! I’ll write it down ______ it is still fresh in my memory.

What an unforgettable experience! I’ll write it down ______ it is still fresh in my memory.

A．since             B．while             C．after             D．until

What an unforgettable experience! I’ll write it down _______ it is still fresh in my memory.

A. since            B. after              C. while           D. until

What an unforgettable experience! I’ll write it down ______ it is still fresh in my memory.

1. A.
   since
2. B.
   while
3. C.
   after
4. D.
   until