You’d sound a lot more polite if you make a request________a question.[ ]

Let’s play computer games. —Great! That sounds_______.

The show Dad, Where Are We Going is really _______ , and it is a hit program on Hunan TV.

the prices of color TV sets down by 50%, the company had a very hard time.

When you stand on the top of the mountain and overlook the surrounding scenery，you’ll find it is________to climb it up with effort