It is ___that makes it turn round

It is ___that makes it turn round )is said,it is energy that makes the world go round. 英语翻译When we sway and turn round and round and round It"s lik it is what he does rather than ___that matters. it is ___that he's a great inventor. english is so ___that we must learn it well It is important that the hotel receptionist ___that guests a It's time to turn round and go yes,it is round.写出问句.急 so is it the other way round -the sun isn't round,is it? It is round when it is drawn,It is square when it is written