Butterflies ______ a sweet liquid produced by flowers, which bees and other insects collect.

 When the group discussion is nearing its end, make sure to ________ it with important points.

How about the two of us ____ a walk down the garden?

----Drinking is harmful_______our health.

The U.S. government on Wednesday _______ former Commerce Secretary Gary Locke as ambassador to China, making him the first Chinese-American ever to take the post.