Question

You________ the work better, but you didn’t put more efforts to it. A．must have done B．can

You________ the work better, but you didn’t put more efforts to it. A．must have done B．can have done C．should have D．could have done

Answer 1

D
试题分析：考查
虚拟语气
。句意：你本可以做得更好，但是你没有付诸更多的努力。could
have
done本可以做某事；must
have
done
sth一定已经做了某事；should
have
done
sth本应该做某事（实际上未做）。故选D。