联接的轴与轴上零件的对中性好用于高速精密的传动。

Mybrotherplaysfootballverywell.

-What'syourname，please?-----

--Hello，LinTao.Howareyou?---__-

---ltis_______ruler.----ltisnot_________eraser

---lsthatyourwatchoverthere?----No，it's___watch.

--What_____doyouspeak?--IspeakChinese.

Thanks_____yourpresent.

Is____youraunt?What's________name?

Themovieisvery______andllikeit

_______yourbrother_________asoccerball?

Let'sbasketball.----Goodidea!

There___somebeautifultreesinfrontofourbuilding

What'syournewmusicteacherlike?

-Whatdowehave__Mondays?