—How long have you been studying today? —_______. |
A. After 7 o'clock B. At 7 o'clock. C. 7 o'clock ago D. Since 7 o'clock |
答案:D
—How long have you been studying today? —_______. |
A. After 7 o'clock B. At 7 o'clock. C. 7 o'clock ago D. Since 7 o'clock |
答案:D