一 Tom, could you tell me how to improve my oral (口语的) English?
一 Well, ______ makes perfect.
A:practice
B:reading
C:writing
300+500=____ 700+200=____ 800+600= ____
900-400=____ 1000-600=____ 1500-800=____
1400-900=____ 6000-5000=____ 900+800=____
gdoo ____