Yao Ming was a great basketball player. I like _______ very much.

The boys often play _____ football in _____ afternoon.

At the top of the high mountains, there is very _____ oxygen in the air.

We know ______ about the new teacher except that she just came back from the US. We hope to know her better.

The food is __________ expensive, it can cost us ________ money to buy it.