–How can I improve my study in the last thirty days?

  --________ listening to the teacher carefully in class. This is the most efficient way!

   A. By           B. On           C. Past         D. Across

You speak good English. Could you tell me ________?

         You’d better communicate with others in English as much as possible.

A.  how can I improve my English        

B.  B. how could I improve my English

C.  how I can improve my English        

D.  D. how I could improve my English

— Helen, your English is pretty good. How can I improve my English?
—I think you can improve your English ______ reading more.

—Can you tell me _______?    

— Doing more speaking is useful, I think.

A. how I can improve my Japanese      B. how can I improve my Japanese

C. when I can improve my Japanese     D. when can I improve my Japanese

 — Helen, your English is pretty good. How can I improve my English?

—I think you can improve your English ______ reading more.

A．at               B．by               C．on               D．for