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One way to ______ species under threat of extinction is to remove them to zoos and parks and feed them there.

We _______ to paint the whole house but finished only the front part that day.

Standing beside the hospital bed, watching my father’s life _______ away, I felt so sad.

In the speech, the headmaster recommended the students not to ______ with dishonest people if they value sincerity and honesty.

---Wow, so many books here! How can you find the one you need?
---That’s easy. The books are         according to subject．

We are at your service. Don’t _______ to turn to us if you have any further problems.

This school is _______ for experienced teachers.

It was quite a job for her to ____ several children all by herself during the war.

You can’t have lost the keys.___ all your pockets again.

Many parents died in Wenchuan earthquake,_____their children orphans.