The home－based business model has been born out______ necessity.A、fromB、ofC、by

With the increased use of high－tech communications equipment, business people ______ .A．ha

With the increased use of high－tech communications equipment, business people ______ .A．ha

The workers are busy_____models for the exhibition.A. to makeB. makingC. being making

Park and Burgess based their model of urban growth on the concept of "natural areas"—that

Questionsare based on the following passage．In London， over half of the homes built betwee

When we finally managed A（to get home) after the B（tiring) long journey, we could C（not ha