The maths problem remained confusing to the boy although _______ over and over.
| A．explaining | B．being explained |
| C．explained | D．having explained |
Sometimes I keep my feelings to myself it’s hard for someone else to understand.
| A．as soon as | B．because | C．as long as | D．although |
He is determined and competent and intelligent as well, which is ________ it takes to become ______success.
| A．that; / | B．what; a | C．what; / | D．that; a |
－Will you accept the job offer?
－If I five years younger, I it.
| A．were; have taked | B．has been; would take |
| C．were; would take | D．had been; would have taken |
You should respect your teammates and be of their feelings when working in a team.
| A．sympathetic | B．sensible | C．considerate | D．aware |
His failure suggested that hethe teacher’s suggestions．
| A．can’t have followed | B．needn’t follow |
| C．mustn’t have followed | D．shouldn’t follow |