Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one ________.
The chairman thought________necessary to invite Professor Smith to speak at the meeting .
—How was the 2008 Beijing Olympic opening ceremony? —________ that the whole world was attracted.
________should the young _______illegal behavior.
_______,but it is also a great way to lower the number of greenhouse gases in the air.
_______, his idea was accepted by all the people at the meeting.