A student comes to his teacher and asks him, “Teacher, how many friends do people need—just one or many?” The teacher says, “It’s _______. You will know for yourself soon.” Then the teacher takes him to the garden and then pointing to an apple tree says, “First bring me a（n） _______ from this tree.” After _______ this, the student has a disappointed（失望的）look on his face and says, “But it’s too high for me. I can’t get it.” “Why don’t you ask your friends for help?” says the teacher.

The student asks one of his friends to come with him and _______ on his shoulder（肩膀）, _______ the student still can’t get an apple on this tree. The student feels _______ and says, “Teacher, I still can’t get to it.” The teacher says, “Don’t you have more _______?” The student goes back and asks his other friends to come with him.

Friends come and start to stand up on the shoulders, trying to build a live pyramid（金字塔）. But the apple on the tree is too _______. The student can’t get it. After seeing this, the teacher calls him back and says, “So, do you _______ how many friends people need?” The student says, “Yes. People need to have ________ friends and they can try to solve（解决）any problem.”

The teacher shakes his head in disappointment and says, “Of course you need a lot of friends. But at least one friend should bring a ladder（梯子）!”