Do you know when the plane takes off?为什么不用将来时when the plane

Do you know when the plane takes off?为什么不用将来时when the plane You should () when the plane takes off Do you know when the plane ()? Do you know _______ the plane takes off? when the plane takes off这句话是什么意思 Have you_____(查明)when the next plane takes off? could you please tell me when the plane -------(take off) When did the plane. has it been announced when the plane is to take off中为什么用when The plane had taken off when i reached the airport the plane takes off at xx time. Plese what time the plane takes off.