Use the correct tense. I (work) for two hours and I am now tired.
Ahad been working us
Bwill be working
Cwill have worked
Dhave been working
Ahad been working us
Bwill be working
Cwill have worked
Dhave been working
Related Questions:
Spot the error:
They are tired because they _______ in the garden since 9 O' clock.