If there is an intruder _____the campus, students should be _____through an announcement, ______teachers should lock their classrooms to keep the children safe.
| A．in, warned, after that | B．at, warned, before which |
| C．on, informed, after which | D．in, informed, before which |
The girl ______ in red is a friend of mine.
| A．dressed | B．dressing | C．dresses | D．dress |
Mr Smith stood up in defence of the 16-year-old boy, saying that he was not the person ______.
| A．blamed | B．blaming | C．to blame | D．to be blamed |
---Do you know _______?
----Sorry, I’ve no idea.
| A．the word means | B．that the word means | C．what the word means | D．what does the word mean |
_____ by some red lanterns, our house looks beautiful, so I don’t think it needs ______.
| A．To light; to be decorated | B．Lit; decorating |
| C．To light; decorating | D．Lit; being decorated |
Can you tell me ______ that the 29th Olympic Games will take place?
| A．it is when | B．when is it | C．when is | D．when it is |