THEY _________ HIM FOR WEEKS .A. DID NOT SEE B. WILL NOT HAVE SEEN...

30. - KIEM TRA 1TIET SO 1 TRON 4 DE
KIEM TRA 1TIET SO 1 TRON 4 DE
30. They _________ him for weeks .A. did not see B. will not have seen C. do not see D. have not seen