---Tom hurt his left leg in the game this morning.---Really? It would take at least two weeks ______ he could recover and return to school. 

They held a meeting ____ they could hear everyone’s idea.

He asked me just to sit down and drink some water ____ I could say anything about my travel plan.

  It will be a long time ______- he returns.

The government has taken some measures to reconstruct the earthquake-hit areas, but it must be some time ________ everything returns to normal.