问题
Mrs Smith, please teach me how to draw on the computer today. – Oh, no. ______. You have to get familiar with the keyboard today.
A:Each dog has its day
B:Never too late to learn
C:Early birds catch worms
D:Learn to walk before you run;
B:Never too late to learn
C:Early birds catch worms
D:Learn to walk before you run;
正确答案是：
