24. — Hello, everyone! Have you heard the meeting will be put off?
— Yeah, that’s what we about when you came in.
| A．were talking | B．are talking | C．have talked | D．had talked |
They eat only plant foods, and take care to ________ animal products from other areas of their lives．
| A．contain | B．maintain |
| C．exclude | D．Include |
— Could you please explain the assignment for Monday, Miss Smith？
— Certainly. Read the next chapter and come to class ________ to discuss what you’ve read.
| A．preparing | B．prepared |
| C．to prepare | D．to be prepared |
Home is ________ somebody notices when you are no longer there.
| A．that | B．when |
| C．how | D．where |
—Mom！Jack has broken a cup！
—Doesn’t matter. Accidents ________ happen.
| A．should | B．must |
| C．will | D．Shall |
The scientist does not study nature ________ it is useful to do so. He studies it because he takes pleasure in it.
| A．until | B．though |
| C．because | D．Unless |