The customer bargained with the shopkeep­er for a long time, and finally they agreed ________ the price

ys, sending e-mails to each other hasbecome a way ______________ what they think to others

safe to us, but food produced in the normal companiesis ______ better.

下列对相关文化知识的解说，不正确的一项是

So far Peter _____back. Shall we make a phone call to him again? [ ]