Based on the clue 'as marble was expensive luca della robbia made his...', what is the answer?

What is associated with: as many as 300000 may have died in the japanese takeover of this city in december 1937? What is associated with: as many as 5000 pro democracy demonstrators were killed in this citys tiananmen square? Based on the clue 'as many hoped on the final episode of friends thes...', what is the answer? Based on the clue 'as many mourned this minister wrote in a letter wa...', what is the answer? Based on the clue 'as mark can mean to make conspicuous one antonym c...', what is the answer? What is associated with: as mars bought this company for 23 billion in 2008 we await the introduction of snickers gum? Based on the clue 'as massive as the sun but much more condensed siri...', what is the answer? Based on the clue 'as master chief shoot at the covenant massacre the...', what is the answer?