先化简，再求值：$\frac{x^2-4x+4}{x}÷(\frac{2}{x}-1)$，其中x=2﹣$\sqrt{2}$．

    A king received a gift of two great falcons (猎鹰), and they were really beautiful. He gave the birds to his head falconer to be trained.

    One day, the falconer told the king that although one of the falcons was soaring (高飞) high in thesky, the other bird couldn't move from its branch (树枝) since the day it arrived.

    The king called on many falcon trainers to train the falcon, but no one could make the bird fly.

    After he tried everything else, the king thought to himself, "Maybe I need someone morefamiliar (熟悉的) with the countryside to work out this problem.” So he asked his men to go and get a farmer.

    In the morning, the king was surprised to find the falcon was soaring high above the gardens. The king asked the farmer, “How did you make the falcon fly?” The farmer said to the king, “It was very easy. I just cut the branch which the bird was sitting on".

    We are all made to fly. But sometimes we just sit on our branches, don't want to leave the things that are familiar to us. So sometimes our lives are boring and not exciting. Let us learn to cut the branch that we are familiar with and free ourselves to a brave soar!

出下列动词的过去式。

①worry____   ②study____    ③ do____   ④ play____

⑤ visit____       ⑥climb____   ⑦ get____