Question

It was playing video games that took the boy too much time that he          have spent learning．

A．could

B．must

C．might

D．ought to

Answer 1

D

試題分析：句意：就是玩游戲花了這個男孩太多的本應(yīng)該學(xué)習(xí)的時間。Ought to have done“本應(yīng)該做卻沒有做”，could have  done“本來可能會做”，must  have done“過去一定會做”，might have done“本來可能會做”，所以D。