I was really too busy with my homework and I couldn’t help ____________ housework.

My friend and I aregood at biology. But we don’t like geography very much.

On October, 6 Apple’s Board announced that Apple had lost ______ wise and creative pioneer, and his spirit would forever be ______ foundation of Apple.

He foundvery interesting to ride a horse on the farm.

_______ of the materials I listened to at the beginning of the exam _______ easy.