Experts said it was       that Malaysia Airlines Flight 370(马航370) had changed course and turned back toward Kuala Lumpur(吉隆坡). 

As the report said, the shopping center was a ________ failure and soon closed.

The Tower of London is _______ the Church tower.

 Being afraid of making mistakes,the little boy ____answer his teacher’s question.

—Why does Thomas speak through every discussion but never listen to the others?—That's what he ________ do. We used to hate that, but are used to it now.