One way to ______ species under threat of extinction is to remove them to zoos and parks and feed them there.
| A．reserve | B．prevent | C．preserve | D．reduce |
In autumn, it’s beautiful outside with golden fallen leaves _______ the ground.
| A．covering | B．to cover | C．having covered | D．covered |
I’d appreciate _____ if you would like to teach me how to use the computer.
| A．that | B．it | C．this | D．you |
Always read the ______ on the bottle carefully and take the right amount of medicine.
| A．explanations | B．instructions | C．descriptions | D．introductions |
—I have not finished with my dinner yet.
—But our friends ______ for us.
| A．will wait | B．wait | C．have waited | D．are waiting |
Some people like living abroad, while others think there is ______ like home.
| A．something | B．anything | C．nothing | D．everything |