38. I still remember the summer _____ I went backpacking in Scotland with my colleagues.
(A) how
(B) where
(C) why
(D) when
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統計: A(102), B(388), C(88), D(1538), E(0) #2764494
統計: A(102), B(388), C(88), D(1538), E(0) #2764494