Where is Lan? - Perhaps she is working. A. She may be working. B. She can be working. C. She mustĐoạn văn28/32Where is Lan? - Perhaps she is working.She may be working. She can be working. She must be working. She will be working. Giải thíchChọn đáp án C Dịch: Lan đâu rồi? - Có lẽ cô ấy đang làm việc.