句型转换。

1. My birthday is on 3rd October. (改为同义句)

    I _______ _______ on 3rd October. (改为同义句)

2. It's time for our English class.

    It's time _____ _______ our English class.

3. It takes Millie ten minutes to read the story. (改为同义句)

    Millie _____ ten minutes ______ the story.

4. My brother does his homework at school. (改为否定句)

    My brother ______ ______ his homework at school.

5. Jack plays football twice a week. (对划线部分提问)

    _______ _______ does Jack play football?

已知基础宽10m，长20m，埋深4m，地下水位距地表1.5m，基础底面以上土的重度为19kN/m³，在持力层以下有一软弱下卧层，该层顶面距地表6m，土的重度18kN/m³，已知软弱下卧层经深度修正的地基承载力为130kPa，试计算基底总压力不超过何值时才能满足软弱下卧层强度要求。