Our plane is flying to Beijing at ten o'clock tonight.为什么是is flying?用flying为什么不对?

the plane is flying（ ）our heads Our plane is flying to Beijing at ten o'clock tonight.为什么是is flying?用flying为什么不对? The plane is flying _______ the cloud Our plane is flying ______a line of mountains now.A.over B.under C.about D.across London,the,to ,is ,plane,flying连词成句 介词填空The plane is flying __the river. The plane is flying above the bridge.哪里错了? The plane is flying above the roofs of the sky a plane is flying above the ___of the city.(roof) A plane is flying ( ) nanjing now.ON;ABOVE;OVER;THROUGH the plane is flying above the___ (roof) of the city a plane is flying the clouds.【填under 或below】 The plane was flying high.. 用适当的介词或副词填空.The plane is flying ____ the bridge. A plane is flying ————the bridge.填上合适的介词 Taking a plane is like a bird [flying]in the sky正确形式填空 the plane is flying the clouds是“above还是“over?RT还有,为什么? 倒装句----the plane.A.flew away B/Away flewC.Away flyingD.Is flying