He was reading his book, completely _______ to the world.
| A．lost | B．losing |
| C．to lose | D．to have lost |
. You can hardly recognize him in the photo, ________?
| A．can you | B．can’t you | C．do you | D．don’t you |
Remember the day when we ___________ you in charge ?
| A．carried | B．left | C．took | D．got |
Amy eats lots of fruit and vegetables, _______ are good for her health.
| A．where | B．who | C．which | D．that |
---Have the papers been graded?
--- Yes, but I regret that you failed it.
| A．to say | B．saying | C．in saying | D．I say |
My cousin is a person __________ I can discuss my problems.
| A．with whom | B．who | C．whom | D．that |