Animals that could not ____ themselves to the changed environment died and those that could survived.
| A．change | B．adapt | C．devote | D．match |
The workers will go on strike if the demands they ______ put forward are turned down.
| A．could | B．would | C．/ | D．had |
The small grocer was at the ______ of the people he owed money to.
| A．expense | B．cost | C．mercy | D．sight |
Green products are becoming more and more popular because they are environmentally ______.
| A．friendly | B．various | C．common | D．changeable |
Nobody could believe what Chloe says because she is ______ changing her mind.
| A．regularly | B．steadily | C．suddenly | D．constantly |
Don't ______.You will ______ new customs and different ways of thinking.
| A．lose your heart；apply to |
| B．lost heart；apply yourself to |
| C．lose your heart；adapt to |
| D．lose heart；adapt yourself to |