Stop making noise, _______ the neighbors will start complaining.
| A．so | B．but |
| C．and | D．otherwise |
—Mum, I climbed to get the Teddy Bear from the top of the shelf.
—My goodness! You________yourself. You________do that next time.
| A．must have hurt; mustn't |
| B．should have hurt; can't |
| C．may have hurt; mustn't |
| D．might have hurt; couldn't |
Sorry, I'm late. I________have turned off the alarm clock and gone back to sleep again.
| A．should |
| B．might |
| C．can |
| D．will |
I posted a book to her three weeks ago. She________have received it.
| A．must |
| B．should |
| C．might |
| D．could |
She________have been to your house. She doesn't know your address.
| A．mustn't |
| B．shouldn't |
| C．might not |
| D．can't |
—I'm sorry, Mrs Smith. I've broken your glasses.
—It doesn't matter, Marks, but you________careful.
| A．must be |
| B．should be |
| C．must have been |
| D．should have been |