单项选择题
If there are （） in the repair work, please come to our duty engineer at once.
A.any problem B.some problem C.any problems D.some problems
单项选择题 If the surveyors （）yesterday, they would have finished the survey work.
单项选择题 Our company has built a new ship in Hamburg and I am going to fly there to （）.
单项选择题 It is no （） arguing about this problem, because our agent will never change his mind.
