Where is Jimmy? - He is ____ work. He is busy ____...

Câu hỏi: Where is Jimmy? - He is ____ work. He is busy ____ his monthly report.

A on / for 

B in / about     

C to / through      

D at / with

Câu hỏi trên thuộc đề trắc nghiệm

- Unit 1. tiếng Anh 12 Có lời giải chi tiết