Just as the clothes a person wears, the food he eats and the friends with whom he spends his time, his house ______ his personality. 

Tim Berners Lee invented World Wide Web in 1991, which _____ everyone to use the Internet

(2014·石家庄质检)I admire Stephen Hawking greatly，whose________about black holes has a great effect on astronomy.

The gym is a public place, so you should be ________ and leave all the machines clean after using them. 

________you can pass the exam or not depends on yourself.