Is it easy ( )a bus to the city centre from here Yes ,of course .1.to catch 2.catching3.to caught 4.catches

Is it easy ( )a bus to the city centre from here Yes ,of course .1.to catch 2.catching
3.to caught 4.catches

1.to catch
It is +形容词 + to do sth."做某事是.的",这是固定句型.
句意:从这儿赶车到市中心方便吗?