We must keep up with the development of the worlds leading enterprises ______we can keep p

We must hurry up（)we can’t catch the early bus.

What does the professor advise the student to do in order to keep up with the class she is

In the event of failure we must wind up our business. The underlined part means______.A．in

What can we learn from the conversation？A．Sampras is making up for what has been lost with

We read the newspapers every day to keep______current events.A．inB．onC．toD．up with

Clearly if we are to participate in the society in which we live we must communicate with other peo