The conflict between economic development and environmental protection, if not appropriately _________, can cause disastrous consequences in daily life settings.
The company was willing to provide us with what we needed, _____ made us excited.
_____ the doctors really doubt is _____ my mother will recover from the serious disease soon.
The students of the music school study ____.
I’d like to have this rope ____ that wire.
The reason ____he was late was ____he had taken a wrong bus.