1.the , work , work ,boss ,two ,to ,them ,more ,asked ,hours
for, after
After two hours work,the boss asked them work more.
2.Naijing, a ,city ,she ,because ,is ,beautiful ,come ,lots of ,
to ,quite ,visitors.
Lots of visitors come to Nanjing because she is quite a beautiful city.
3.the bus stop ,having breakfast, he ,to , this moring, after,
ran off
This morning, after having breakfast,he ran off to the bus stop.
4.will,fall behind ,others ,he ,you ,doesn't,help ,if , next term ,you .
Next term ,if he doesn't help you,you will fall behind.