照样子,写词语
例:茫茫然 ____ ____ ____
千门万户 ____ ____ ____
如图所示,轻绳上端固定在天花板上的O点,下端悬挂一个重为10N的物体A,B是固定的表面光滑的圆柱体。当A静止时,轻绳与天花板的夹角为300,B受到绳的压力是( )
— _____ will your father return home? It's a long time since I saw him last time.
— Just in two days.