_______ the satisfaction of our customers, the products worked very well.
| A．With | B．For | C．At | D．To |
The thief _____ the papers all over the room while he was searching.
| A．abandoned | B．vanished | C．scattered | D．deserted |
Today, housework has been made much easier by electrical _____.
| A．facilities | B．appliances | C．instruments | D．equipment |
The _____ of the trees in the water was very clear.
| A．mirror | B．sight | C．reflection | D．shadow |
One _____ needed when making a cake is flour; another is sugar.
| A．container | B．ingredient | C．content | D．equivalent |
They have been waiting for many hours to see the singer, but the airplane must have been _____.
| A．behind the times | B．behind schedule |
| C．ahead of time | D．in no time |