A)
a) What is the most beautiful city in Russian Federation?
b) What is the most interesting museum you visited in Moscow?
c) What is the most important holiday in England (Russia, Europe)?
B)
a) Is a book more interesting than a film?
b) Is Mathematics more difficult than History?
c) Is a bicycle cheaper than a car?
d) Is Spring warmer than Autumn?
как вариант, Is it warmer in Spring than in Autumn?