【推荐1】The naughty boy was muddy because he _______ soccer in the rain all afternoon.

A．has been playing	B．had played
C．had been playing	D．was playing

【推荐2】—I have failed in the driving test again. I ______ hard on it but...
—Never say die. In fact, the new rules are too difficult but you are making progress.

A．work	B．worked
C．have been worked	D．had been working

【推荐3】With rising work pressure in big cities, Zhang Yixuan decided to return to his hometown. Before that, he _________ at a media company since his university graduation.

A．had been working

B．had worked

C．worked

D．has worked