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

The book you bought is more expensive than _______.

--- Where can we have supper tonight? --- Oh, if you don’t mind,we can do it at _____ of the restaurants.  

The thought of going back home was _______ kept him happy while he was working abroad.

At your company there are a few machines similar to      described in this magazine.