Leaders of many countries have been trying to ______ what it is that makes China develop so fast.
_____ his physical disability, he still works as hard as his colleagues every day.
He insisted that he______ his best and ______ rewarded.
---How do you feel your travel to Hainan? --- _______ ,I enjoyed it very much, although the weather of some days was unpleasant.
_______ food have been sent to the disaster area to help the people who lost their homes.
.Could it be in the room _____ we had a talk last night ___you left your key?