I cannot understand why Steven bought so many watches but never wears 　　　 of them.

The look on Max’s face was ______ between puzzlement and anger. 

---Which of the two coats will you take?---I’ll take________ of them，because I don’t like the colours.   

________ arouses his interest can be found in the school library and that is why he goes there ________ happens.

 --- Do you have any money with you? --- Sorry, I have ________ left.