—Why ! Where's my passport? Maybe I left it on the plane.
--My Goodness ! You ____________ things behind.
| A．had never left | B．didn't leave |
| C．never left | D．left |
Ever since their quarrel, there has been an unpleasant in the office.
| A．circumstance | B．surroundings | C．condition | D．atmosphere |
Having checked the doors were closed, and _____ all the nights were off , the woman opened the door to her bedroom.
| A．why | B．that | C．when | D．where |
In this experiment, they are wakened several times during the night, and asked to report what they _____.
| A．had just been dreaming | B．are just dreaming |
| C．just dreamt | D．have just been dreaming |
— I _ it as a must of a student that he should say hello to his teachers first whenever they meet.
— I can’t agree more.
| A．take | B．look | C．think | D．make |
It’s only when you lost something __how much you value it.
| A．you will realize | B．will you realize |
| C．then you will realize | D．that you will realize |