题目内容
—Mum, Tom is always working late into night. I don't know what he is busy doing.:状_元_源Z_—Oh ,he _____for his new project.
A. has prepared B. had prepared C. has been preparing D. was preparing
C

练习册系列答案
相关题目
Mum: Tom?
Tom: ? Here I am.
A.What | B.OK | C.Yes? | D.All right |
Mum: Tom?
Tom: ? Here I am.
A.What | B.OK | C.Yes? | D.All right |