It was quite a long time ______ he really realized the serious situation.
| A．since | B．when | C．after | D．before |
Could you give us the reason why you didn't do as _____ ？
| A．were told | B．to be told | C．told to | D．told |
To all of you _____ the honour for the success.
| A．belongs to | B．belong to | C．belongs | D．belong |
Mary didn't come to our party yesterday because she was busy preparing for the exam. We all felt sorry _____ her.
| A．of | B．for | C．except | D．besides |
He hid himself behind the door _____ he still could see what would happen to his classmates.
| A．there | B．which | C．from which | D．from where |
Do you have any idea of the reason _____ he referred to？
| A．that | B．where | C．why | D．when |