HE SAID THAT HE _____ HIS HOMEWORK SINCE 7 O’CLOCK. A. HAS DONE...

17. - TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN
TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN

17. He said that he _____ his homework since 7 o’clock.

A. has done

B. did

C. had done

D. was doing