Câu hỏi

He _________ us on the last day of the congress so his presence at the opening ceremony was something of a surprise.

• A must have joined                                          
• B was to join
• C had to join                                                   
• D should join

Luyện Bài Tập Trắc nghiệm Tiếng Anh 12 mới - Xem ngay