Why not go travelling— I can’t afford it. _____ the cost, it will take a lot of time.

if ________ properly, will help us break the ice and gain affection of others in social communication.

It was ____ that he had to ask for help．

Trust is needed in the whole society, which requires parents to obey their own rules and set a good example _______ children can trust them

It was announced that only when the fire was under control ___ to return to their homes. [ ]