Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.
Lincoln ______ slavery. He wanted ______ a new country of freedom .
I have read ______ books and I’ve learned ______ .
I prefer ______ washing to ______.
Which ______ more fat, cream or rice?
The doctor suggested he ______.