NASA says three of 22 space missions that carried generators similar to Galileo's ended in accidents.

It's hard to resist temptation.

Write two expressions that are followed by either count or non-count nouns in conversation.

In order to live happily and healthily with parakeets or parrots, you should understand the science of animal behavior for domesticated birds, and consider the emotional effect of eventually losing them.

Yes. She got an introduction from her old doctor and transferred.

How disappointed my parents would be, if I should fail!

Ken, who is a graduate student, went to the United States last year.

They are making every effort for the promotion of world peace.

I polished for all I was worth. The trouble is that my stock of low-grade gems was surprisingly low.

The key to raising every soldier into a great warrior is in strengthening training.