—I miss my mother very much. She has gone abroad on business for nearly a year but luckily

问题补充：

—I miss my mother very much. She has gone abroad on business for nearly a year but luckily she will be back in a week.

—Pardon? I something else just now. will she come back?

A. was thinking; How long

B. thought; How often

C. was thinking; How soon

D. thought; When

答案：

A. was thinking; How long

B. thought; How often

(答案→)C. was thinking; How soon

D. thought; When

解析：how soon表示多久之后，常用在将来时中。