--- Do you know the reason _________ pilots turn off the plane’s lights before taking off?
---The practice is for the passengers to adjust to the dark _________ an emergency.
| A．why; for fear that | B．for which; in case of |
| C．how; for fear of | D．that; in case |
You were stupid to climb up that big tree. You ______ yourself.
| A．must have killed | B．can have killed |
| C．should have killed | D．might have killed |
.Seeing her mother come back, ______.
| A．tears ran down her cheeks | B．her tears ran out |
| C．she burst into tears | D．she burst into crying |
.-- Have you seen the film?
-- Yes. I ______ it three times when I was in Tokyo.
| A．saw | B．had seen |
| C．have seen | D．was seeing |
.The headmaster made a suggestion that the sports meet until next Sunday．
| A．will be put off | B．will put off |
| C．put off | D．be put off |
.The wet weather will continue tomorrow, when a cold front ______ to arrive.
| A．is expected | B．is expecting |
| C．expects | D．will be expected |