By Christmas, I _______ for Mr. Smith for six years.
A. shall have been working B. shall work C. have been working D. shall be working
//gthich đầy đủ giúp mình với ạ
By Christmas, I _______ for Mr. Smith for six years.
A. shall have been working B. shall work C. have been working D. shall be working
//gthich đầy đủ giúp mình với ạ
Câu hỏi mới
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