A.forB.intoC.*No one saw the thief when he entered( )th……

单项选择题( )child enjoys Christmas.

单项选择题If the corporation wants to increase its (),it must reduce operating expense.

单项选择题He hides behind door or creeps under a table to () from his enemies.

单项选择题Some of them did not get a chance to see the Olympic flame because of the () changes, but we, indeed, feel their passion for China and the Olympics.

单项选择题He sometimes employs students to () samples of their products.