Malaysia Airlines Flight 370 ___________ course and turned back toward Kuala Lumpur -- but there were no indications from the pilot that he was doing so.
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.