Do you have to take care of your mother at home ? — Yes , I ____ .

Tom was caught cheating in an important exam _____, he lost a golden chance of taking part in this competition[ ]

__ in his book, he didn’t notice me ________ I entered the room.

I was told that 10:15 flight wouldtake us to Shanghai in time to reach Fudan University

The three of us ________ around Europe for about a month last summer.(2012·天津)