--______ do you like better,

the purple one or the gray one?

--I like the purple one better.

A. What　　B. Which　　C. Where

What do you want to buy ______ your mother?

A. for　　 B. to　 　C. at

--What time is it?

--Let's look at the ____.

A. glue　　B. globe　　C. clock

--What's ______ class?

--Music. I like music class because I like singing.

A. three　　 B. third　　 C. the third