Following are three groups of sentences. I tried to use a different but adequate structure to restate sentence A. Please correct errors for me. Thanks a lot.( ^_^ )

A)The cab driver’s door popped open at the very sight of a traveler.

B)The cab driver opened his door at the very moment he saw a traveler.

A)The rather arresting spectacle of little old Japan adrift amid beige concrete skyscrapers is the very symbol of the incessant struggle between the kimono and the miniskirt.

B)The ceaseless fight between the kimono and the miniskirt is a striking characteristic of Japan who takes a boat of traditional culture drifting down the river of modernization.

A)I experienced a twinge of embarrassment at the prospect of meeting the mayor of Hiroshima in my socks.

B)The thought of meeting the mayor of Hiroshima in my socks made me a little embarrassed.