WE’RE SURE THAT (A) IT WAS NOT (B) UNTIL (C) FIFTH YEAR THAT HE (D) COULD SPEAK CHINESE WELL

8/ - SACH BT ANH 10 CO DAP AN
SACH BT ANH 10 CO DAP AN

8/ We’re sure that (A) it was not (B) until (C) fifth year that he (D) could speak Chinese well.