The river smells terrible. People_______ dirty things into it .
| A．must stop to throw |
| B．must stop from throwing |
| C．must be stopped to throw |
| D．must be stopped from throwing |
— Were you allowed to go to your cousin’s birthday party?
—No, I .
| A．am not invited | B．haven’t invited |
| C．didn’t invite | D．wasn’t invited |
Someone is knocking at the door. It my sister. It's time for her to be back.
| A．can’t be | B．may not be | C．must be | D．mustn’t be |
— Did you see the movie ‘If You Are The One (非诚勿扰)’ last night ?
— Yes, but when I got to the cinema , the film ________ for ten minutes .
| A．had begun | B．had been on |
| C．has been on | D．began |
—Tom wants to know if you ________ a picnic next Sunday.
—Yes. But if it ________， we'll visit the museum instead.
| A．will have; will rain | B．have; rains |
| C．have; will rain | D．will have; rains |
Once a year , people take part in “ ______ Lights ” activity to help save energy .
| A．Show Off | B．Turn Off | C．Take Off | D．Put Off |