Part 7:

Mark the letter A, B, C or D to indicate the correct answer to each of the following questions

Câu hỏi

We congratulated him ___________ having invented an energy-saving device.

A. on

B. about

C. for

D. at

Đáp án
A. on

Câu hỏi thuộc Bài tập:

Mid-Second Term Test