TOM (A) SAID HE (B) HAS DONE (C) HIS HOMEWORK (D) SINCE 7 O'CLOCK.

28. - BAI TAP TRAC NGHIEM TIENG ANH 12
BAI TAP TRAC NGHIEM TIENG ANH 12
28. Tom (A) said he (B) has done (C) his homework (D) since 7 o'clock.