【C7】A．pleadingB．beggingC．insistingD．calling on

【C7】A．advisingB．suggestingC．demandingD．calling

Scientists measured the impact that people have on the environment using a term called car

【C7】A．forB．ofC．toD．on

Today the energy problem becomes critical. It ____ an immediate solution.A calls on B

An informal communication network on a project and within an organization is called a(n):A

A good writing __________ clear organization and choices of words. A. calls on B. calls