The accident has reached a point _____ the police have to be called in.
Green economy offers a new model ______ people could both protect the climate and develop the economy, according to what Li said at the International Cooperative Conference on Green Economy and Climate Change.
Buses have routes. They ________ and ________ people at different places on the routes.
He doesn’t spend any more money on clothing than I do, but ______ he manages to look so stylish.
When electric cars become ______ , we’ll need to build more charging stations.