We drove to Canada this past summer. We had to ..... only four times on the way. We got pretty good gas mileage. (*) fill out (*) ran out (*) fill up (*) fill in
This is a companion discussion topic for the original entry at https://english.best/questions/8242,we-drove-to-canada-this-past-summer-we-had-to-___-only-four-times-on-the-way-we-got-pretty-good-gas-mileage/