Choose the best answers to complete the sentences, or replace the underlined part.

Câu hỏi

I find myself at a loss to understand Harold's behavior.

A. I lost contact with Harold, so I couldn't understand his behavior.

B. I have to lose a lot to understand Harold's behavior.

C. I understood Harold's behavior completely.

D. I find Harold's behavior quite incomprehensible.

Chuyên đề ôn thi: Cụm từ cố định (3)