The train _____at 11.A.will be arrive B.is arriving 选哪个?为什么?

when is the train arriving?这里的arrive 为什么是ing形式,并举例. It is required that we _____at six.A.will arrive B.arrived C The package will.on Monday.A.arrive B.arrives C.arriving D.b When are the train arriving还是arrive When will the train ___?A arrive B arrive at C arrive in D r if only the letter ____there in time!A arrive B is arriving The train ____ she is traveling is arriving.A in which B by 十万火急的英语听力A)The train will not arrive.B)The train was caught they will be arriving here tomorrow arrive已经是动词了 为什么will 后要加 The train ____she is travelling is arriving. what time will the guest be arriving?为什么要用 be arriving?ing有什 Could you tell me___?A.when the train will arrive B.when the