【推荐1】In 1988, one Australian historian ________ that at least a quarter of the workforce would be without jobs within 10 years because of computers.

A．commented

B．announced

C．complained

D．claimed

【推荐2】All the guests _____________ about the noise because they couldn’t sleep at night.

A．complained

B．debated

C．argued

D．learned

【推荐3】The supermarket has installed security cameras to ________ thieves.

A．foster

B．complain

C．edit

D．deter

【推荐1】—I ran into a big tree on the way to school this morning. My head still aches a lot.
—I’m sorry to hear that. I suppose you________the cellphone then.

A．checked

B．were checking

C．have checked

D．had checked