--- Mrs. Smith, please teach me how to draw on the computer today. --- Oh, no. .
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30. --- Mrs. Smith, please teach me how to draw on the computer today.
--- Oh, no._______. You have to get familiar with the keyboard first.
| A．It is never too old to learn | B．Think twice before you do |
| C．Learn to walk before you run | D．One today is worth two tomorrows |
试题答案
C
解析