Means of travelling

My grandpa doesn't have a car or bike. So he goes to work ______.

There are no buses near my office. I love driving, so I always go to work _________.

I live in Italy. I go to visit my friends in Australia ________ once a year.

I am a sporty person. I like to be fit. I always go to work _______.

I don't have a car, so I always call a __________ to go to work.

I love the sea. I like travelling ________.