I WISH THAT I ………….. IN HANOI AT THE END OF 1972 TO WITNESS THE “B...

Tiếng Anh cau-trac-nghiem-ngu-phap-va-tu-vung-tieng-anh

16. I wish that I ………….. in Hanoi at the end of 1972 to witness the “Battle of Dien Bien Phuin the Air”.a. was b. werec. had been d. has been