I always go there by bus. — Why not ______ by train? It’s faster. [ ]

I joined the League ________ May, 2009. What about you? —I’ve been a League member _______ three years. [ ]

Have you seen Mr. Black these days, Jack? —-Yes, I met him when I ________ in the street yesterday.

What are those?– are baseballs.

You must concentrate more ______ your English study. [ ]