She________have been to your house. She doesn't know your address.
| A．mustn't |
| B．shouldn't |
| C．might not |
| D．can't |
Exciting as its special effects are ______, there is too much violence in the film.
| A．to watch | B．to be watched | C．watching | D．being watched |
---May I take your order now?
---______.
| A．Yes, two hamburgers | B．No, my affairs are in order |
| C．Yes, we must obey orders | D．No, it isn’t my order |
We were all surprised when he made it clear that he ______ office soon.
| A．leaves | B．left | C．would leave | D．had left |
Many new______ will be opened up in the future for those with a university degree.
| A．realities | B．necessities | C．probabilities | D．opportunities |
Most birds find it safe to sleep in the trees, but ______ they have eggs or young chicks, they don’t use a nest.
| A．why | B．how | C．where | D．unless |