“What's the matter, Mum?”

    As soon as I entered the door, I found that my mother was not____ (please). It was unusual — she usually____ (open) the door and welcomes me with a smile!

    “She's dying,” Mum said____ (sad). I knew what she said. The tulip (郁金香), my mother's favorite, is dying.

    A month ago, we moved into our new house and Mum____ (buy) a very beautiful tulip in a flower shop. Mum liked it very much. Whenever she was free, she would sit in her armchair beside the tulip and enjoy ____ (it) beautiful colour and nice smell.

    She regarded the tulip as a baby and looked after it carefully. She put the tulip by the window and moved it from one place to another____(give) enough sunshine to it. The first thing she did____ she got up every morning was to water the tulip. Mum also fertilized it many times.

    She hoped that____ great care, the tulip would become more and more beautiful____ the tulip was dying because of too much sunshine, water and fertilizer.

    It's true that mother loved the tulip. But this kind of love must be ____(harm).

    Too much love can sometimes kill what you love.

用直尺和圆规作一个角等于已知角得到两个角相等的依据是____ ．