BY CHRISTMAS, I...FOR YOU FOR 6MONTHS. A. SHALL HAVE BEEN WORKINGB....

7. - TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH
TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH

7.

By Christmas, I...for you for 6

months. A. Shall have been working

B. shall work

C. have been working

D. shall be working