Select the alternative that correctly fills the gap, with the correct preposition placement.
I. Some people talk _________ their work all the time.
II. She goes to work _______ foot.
III. Do you like travelling ______ train? IV. Do you coffee _____ sugar?
I. Some people talk _________ their work all the time.
II. She goes to work _______ foot.
III. Do you like travelling ______ train? IV. Do you coffee _____ sugar?
