I FEEL VERY TIRED. I ________IN THE GARDEN FOR THE LAST TWO HOURS....

9. - 25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN
25 DE THI HOC KI 1 MON TIENG ANH LOP 12 CO DAP AN

9.

I feel very tired. I ________

in the garden for the last two hours.

A. have been working B. worked

C. have worked

D. had been working