—What's the matter with the man hanging his head there?
—Well，if you ________ know, he was caught stealing my bike.
| A．must | B．may | C．can | D．shall |
-Everything was placed exactly _____ Princess Anna wanted it for the Queen’s Wedding.
| A．while | B．when | C．where | D．though |
--- Is Bob still teaching in the school?
--- I’m afraid not. He is said _____ the school already as he has become an official.
| A．to have left | B．to leave |
| C．to have been left | D．to be left |
The weather turned out to be fine yesterday. I _____ the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
I know nothing about the film LUCY _____ it is directed by Luc Besson.
| A．except | B．except for |
| C．except that | D．Besides |
Do you know how long the dinosaurs _____ on the earth before their extinction?
| A．had existed | B．had been existed |
| C．have existed | D．have been existed |