After visiting China, most of the foreig
问题:
After visiting China, most of the foreign friends said they would never forget the time _____ they had spent
in China.[ ]
A. what
B. that
C. when
D. at which
After visiting China, most of the foreign friends said they would never forget the time _____ they had spent
in China.[ ]
A. what
B. that
C. when
D. at which