A：仍保持对学习的兴趣和探索愿望
B：集中注意力和精力解决问题
C：遇到困难和阻挠时，调节不良情绪
D：不能浪费过多的精力在困难上面
It's very useful to ______the correct answers next to the mistakes.
— I'm dead tired．I can't walk any farther, Jenny.
— _______, Tommy．You can do it! （ ）
