单项选择题
A．colors may have effect on our work and study B．colors do have effect on our moods (情绪) C．light and bright colors make people happy D．factory workers can work better in a bright room
A.popular B.proper C.inner D.educated
A.Very good, thank you. B.Not at all. C.Please take it easy. D.Are you all right E.Excuse me. F.Thank you! G.Don’t take it so much to heart. H.Coffee, pleas