Choose the correct participle form. (Present Participle, Past Participle or Perfect Participle)

Câu hỏi

_____ in the company for many years, he knew everyone and everything.

A. Having worked

B. Working

C. To work

D. Worked

Đáp án
A. Having worked

Câu hỏi thuộc Bài tập:

E11- Unit 5- participles