---How do you learn English so well ? ---_______ chatting with my uncle in the USA.A. for B. By C. In D. With
—Do you know________ ? —At 8:00 a.m.
Eating ________ and doing more sports are good ways to keep fit.
They told us there would be great changes in their city in ______ time.
_______ well you can drive, you must drive carefully.
By the time the fireman arrived, the big fire_______.