19.worker/my/a/father/is
=>..............................................................
20.is/on/your/left./the drugstrore
=>.............................................................
21.next/will/thirteen/year/I/be
=>.............................................................
22.you/please/tell/soon/about/write/and/me
=>...............................................................
23.to/I'm/going/go/this/weekend./swimming
=>.............................................................
24.bring/some/to/the/praty/to/I'm/going/flowers
=>..............................................................
\(\sqrt{3}\)=1.732050808
a=1