Đề bài

Choose the best answer

Everybody was exhausted. It looked as if they (work) ____________ hard.

• A. worked
• B. had worked
• C. work
• D. works

Lời giải của GV Loigiaihay.com

Dấu hiệu: Everybody was exhausted => sử dụng câu giả định với As if ở quá khứ

Cấu trúc: It looked as if + S + had + Vp2

=> Everybody was exhausted. It looked as if they had worked hard.

Tạm dịch: Mọi người đều kiệt sức. Có vẻ như họ đã làm việc chăm chỉ.

Đáp án : B