Complete the following sentences according to the first letter given. (1)All theories o_________ from practice and in turn serve practice. (2)The garden offers a v_________ of attractions. (3)Our house has got a s_________ view across to the river. (4)Modern c_________ is breathing new life into the chocolate culture. (5)With its simple d_________, the main bedroom is a peaceful haven. (6)This pavilion has eight edges, so it is also known as “o_________ pavilion”. (7)The black sky was i_________ by forked lightning.