1 . Directions: Complete the following sentences by using the words in the box. Please note that verbs should be used in proper tenses and voices.

cruel             argue             remove             adjust             extinction threat             attempt             concern             recall             typically

1. Some animals kept in zoos have trouble ________to climates different from those of their natural habitat.
2. Their main________ is that they haven’t received enough money.
3. They________ constantly about chores these days and their relationship is going from bad to worse.
4. The use of nuclear weapons is definitely a horrible________ to the whole world.
5. It was________ of them to make the donkey carry such a heavy load.
6. I remember his face but I cannot exactly________ where I have met him.
7. Illegal hunting may lead to the________ of those endangered animals in the wild.
8. He________ the mud from his shoes before entering the room.
9. Animals living in tropical countries are________ housed in heated tanks.
10. I tried to smile, but I made a rather poor________ at it.