1. He has his own method of learning. 他有自己的学习方法。 2. He climbed the tree by means of a ladder. 他用梯子爬上树。 3. It s the best way to do it. 这是做这件事最好的方法。 4. We have been looking for more effective and scientific teaching___with which students can learn happily. A. methods B. ways C. means D. use