表达原因 I'm... because... — 英语选择题
题目
Ben得到一盒彩笔，心情很好。哪句话能用“I'm... because...”表达他的感受和原因？A. I'm happy because I have new crayons. B. I'm happy and I have new crayons. C. I have new crayons because I'm happy. D. I'm because happy I have new crayons.