单项选择题A.Lower prices.B.More choices.C.More competition.D.More companies.
单项选择题A.It’s a market.B.It’s a recreation center.C.Ifs an algebra school.D.It’s the name of a part-time job.
单项选择题A.Botany is a very ancient learning.B.People in the Stone Age knew a lot about plants.C.People in the Stone Age knew little about plants.D.Pre-industrial societies have little insights about plants.
单项选择题A.One month,B.One month and a half.C.Two months.D.Two months and a hale
单项选择题A.She broke the microphone:B.She was interrupted by a phone call during her presentation.C.She is planning to give her presentation as soon as the microphone is fixed.D.The microphone broke just as she began her presentation.