Since here it's too hot for you，you may ________ go to work in a seaside city.

Buses have routes. They ________ and ________ people at different places on the routes.

The plan __________just because people were unwilling to cooperate (合作).

 In winter the small town is often __________ from the rest of the world. 

22．If you keep practising your son in football, he________ to make a famous player．