(   )31£®We ____go until we____ it back again.

       A. don’t ,got  B. won’t, get  C. didn’t, get  D. won’t, will get

(   )32£®— Where are the runners?

— Over there. They ________ warming-up exercises.

A£®is doing        B£®do            C£®are doing  D£®does

(   )33. My grandfather walks ___than my grandmother.

A. more faster     B. much faster  C. very faster    D. too fast