____ 英语是你最喜欢的科目吗？
Is English your                 ?
____ 每天读书是个好习惯。
It's a good habit to                  every day.
____ 帮助别人就是帮助我们自己。
Helping others is helping          .
____ 汽车站离我家很远。
The bus stop is very             my home.
____ 他通常在放学后踢足球。
He usually plays soccer          .

已知$\cos \left(\pi +x\right)=\frac{3}{5},x\in \left(\pi ,2\pi \right)$，则tanx等于（    ）