____ educational CD-ROM has just come out. _____ CD-ROM is called ‘Dora Explorer’.

What were you doing when the earth quake happened in Jilin?—I________TV when I heard the news.

The reason ________ he was late for the meeting was _______ his car had broken down on the road.

Thank you for giving us some useful advice _______ how to deal _______ the problems.

Why are you standing, Alice?—I can’t see the blackboard clearly. Two tall boys are sitting _______ me.[ ]