—Your watch looks so nice. It must be expensive.—No. I ____ 20 yuan on it.
The students are so ___ to watch such an ____ movie .
The girl under the tree is new here , so ___ people know her .
I often watch them ___ the piano .
— Will you buy the white watch or the red one ? ___ I’ll take ___ .One is for my mother and the other is for my sister .
I am good at math , but his English is ___ than mine .