—Such a mistake could have been avoided.
—Unfortunately, he _______ the mistake again and again.
| A．repeated | B．would repeat |
| C．had repeated | D．would have repeated |
---Where will you start your work after graduation?
---Mmm, it's not been decided yet. I ____ continue my study for a higher degree.
| A．need | B．must | C．would | D．might |
Our TV sets sell well, but ten years ago no one could have imagined such a big share in the market that they ____.
| A．were having | B．had had | C．were to have | D．had |
This photo of mine was taken ______ stood the famous Eastern Bright Pearl in Shanghai.
| A．which | B．in which | C．where | D．there |
To our surprise, the painting considered______ should have won the prize.
| A．being copied | B．having been copied |
| C．to have copied | D．to have been copied |
It was ______ the old clock that the old man spent the whole morning at home.
| A．repairing | B．repaired | C．to repair | D．in repair |