6. Dreams are beautiful. However, it always takes a lot of time and work to ________ them.

8. Both English and French are widely used in Canada. Please feel ________ to choose either of them.

12. My ________ is running out, so I must go to the gas station before there is none left.

13. It snowed the whole day yesterday, so the ground was covered with ________ snow.

The panda is thought to be one of the cutest animals in the world. But it is also one of the animals     16     danger. Nowadays, there are only     17     than 2,000 pandas in the world.

Pandas live in the forests and mountains of Southwest China. The     18     mainly feed them with bamboo, and an adult panda needs to     19     a lot of bamboo every day. However, the area of bamboo forests is becoming smaller and smaller     20     of human activities. So pandas are becoming fewer in number. Our     21     has made laws to help the pandas. There are more than 30 nature     22     to protect pandas from being hurt by other animals, but these are not enough. More nature parks and bamboo forests are     23     so that pandas can have enough places to live in and enough food to eat. Besides, everyone should play a part in     24     the pandas. After all,     25     share the same world with them.