文章大意：本文主要讲在后院种了女儿从学校带来的四棵小树苗，然而三棵树苗不幸死去，剩下最后一棵比较弱，后来那棵也渐渐死去，原本想砍掉，但因为小鸟在其上筑巢，而没有砍掉。
When my daughter was in primary school, she brought home four small branches (枝条) one day. They were ________ given to the students by the school. I ________ them in the backyard.
Over the years, three of them ________, only one stayed there. It grew very ________, so it was short. Then I noticed that it was beginning to die, too, The lower branches were becoming bare (光秃秃的). The leaves on the main branches had turned brown, and only the ________ of the tree was still green. Last summer, I tried my best to ________ it, but it was useless.
This morning I decided to ________ it down. ________, when I went over to have a closer look, I noticed something moving in the branches. It was a little ________, patiently building its nest in a branch at the top of the tree. I smiled as I looked at it, thinking that maybe the old tree still had some life and it was still ________. It may not be healthy or pretty, but it still provides a home for birds.
11. | A．flowers | B．trees | C．fruits | D．grasses |
12. | A．planted | B．threw | C．carried | D．forgot |
13. | A．rose | B．missed | C．died | D．appeared |
14. | A．strangely | B．specially | C．quietly | D．slowly |
15. | A．middle | B．top | C．bottom | D．inside |
16. | A．mend | B．protect | C．save | D．change |
17. 18. | A．Still | B．Also | C．Instead | D．However |
19. 20. | A．awful | B．truthful | C．useful | D．peaceful |
