Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences given.
They were busy with their schoolwork. They spent time helping the elderly in the retirement home.
They were busy with their schoolwork, but they still spent time helping the elderly in the retirement home.They spent time helping the elderly in the retirement home, so they were busy with their schoolwork.They were busy with their schoolwork, and they spent time helping the elderly in the retirement home.They spent time helping the elderly in the retirement home, or they were busy with their schoolwork.Hướng dẫn giải:Kết hợp câu sử dụng ‘but’ chỉ sự đối lập giữa 2 vế câu
Dịch: Dù bận rộn với công việc học hành, nhưng họ vẫn dành thời gian giúp đỡ những người già ở nhà hưu trí.
