With the boy_______ the way, we had no difficulty _______the way to the West Lake. 

They were all standing on the playground,           white suit.

Most companies’ marketing effort is focused on getting customers, with little attention _______ to keeping them.

To our great relief, ______ time going on, more and more of the victims of the earthquake were rescued.

--- Come on, please give me some ideas about the project.--- With so much work ________ my mind, I’ll almost________.