- I called you at 8: 00 yesterday evening, but no one answered.

- Sorry. I______ clothes for my parents at that time.

小李农校毕业时决心放弃在城市就业好机会，毅然回到农村，他选择了种植果树，利用所学知识，经过自己的努力，终于成为当地有名的“苹果大王”。一个人要自强首先需（    ）

贯穿于植物的六大器官中，为各部分输送营养的组织是（  ）

                                                                                                                      钟山即事   
                                                                                                                         王安石
                                                                                                 涧水无声绕竹流，竹西花草弄春柔。
                                                                                                 茅檐相对坐终日，一鸟不鸣山更幽。