问题

Mr. White, will you please teach me how to perform pair skating today?– . You have to practise single skating well first.
A:Two heads are better than one
B:Think twice before you do
C:Learn to walk before you run
D:One today is worth two tomorrows
B:Think twice before you do
C:Learn to walk before you run
D:One today is worth two tomorrows
正确答案是: