My best friend Gina studies very hard. S
问题:
My best friend Gina studies very hard. She often studies very late every night, sometimes _____ 2 am. [ ]
A. at
B. until
C. before
D. to
My best friend Gina studies very hard. She often studies very late every night, sometimes _____ 2 am. [ ]
A. at
B. until
C. before
D. to