He is______an important customer now and he will be back tonight.A．calling onB．calling upC

It is very important for the strong man to know that ______ strong he is, he cannot be the

He thinks he is superior ______ his classmates because his father is an important person.A

The capital city of Canada is______, which is an important financial and commercial center

An organizations most important concern should be______.A．customers" needsB．management phi

An emergency _______ is very important in case of

It is__________ with the customer not to let the shop assistants guess what he really like