complete the following passage by choosing appropriate words- (prepositions)

there are planes that can fly faster than the speed of sound but passanger airplanes mostly fly (A)______ speed less than that (B) ________ sound. although air planes (C) ________ can fly (D) ______ super sonic speed have been built. there is (E) _____________ if they fly (F)_________ speed greater (G)____________ the speed of sound (H) _________________ the consumption of fuel increases enormously..

i have solved dis but want to check.. so plz help..