— What can I do for you, madam?
—I want some cakes my parents.
A:buy; for
B:to buy; to
C:buy; to
D:to buy; for
I can play f____.
Try to ________ half an hour each day for keeping a diary, and you'll achieve distinction in writing.
使苏联由传统农业国变为强大工业国的事件是( )