Marx and Marxism (Graded Discussion)

I’m stuck on a Sociology question and need an explanation.

In which ways have Marx and Engels expressed admiration for the bourgeoisie and capitalism?

In which ways have Marx and Engels expressed antagonism and rejection toward the bourgeoisie and capitalism? 

In which ways are Marx and Engels ideas relevant for sociology today? 

Include a direct reference or quotation from the Communist Manifesto  when answering these questions.