Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
The director guided us through the museum. He gave us a specific explanation.
A. While the director was guiding us through the museum, he gave us a specific explanation
B. The director guided us through the museum and was giving us a specific explanation
C. Guiding us through the museum, a specific explanation was given to us by the director
D. The director guided us through the museum while a specific explanation was given to us
Đáp án A
Ngưới hướng dẫn viên chỉ dẫn chúng tôi qua viện bảo tàng. Anh ấy đã đưa cho chúng tôi một lời giải thích cụ thể.
= A. Trong khi người hướng dẫn viên chỉ dẫn chúng tôi qua viện bảo tàng, anh ấy đã đưa cho chúng tôi một lời giải thích cụ thể.