A.SmileB.Offer a handshakeC.Stand straightD.Fiddle with objects
单项选择题He smoking because it does harm to health.
单项选择题Online computer systems help us provide a() service to our customers.
单项选择题In general most workers were in favor of a(n) () scheme offering financial rewards.
单项选择题The secretary ( )that she has stolen the letter.
单项选择题Did he ( )you a gift last Sunday?
