--- Must I return the book today? I haven’t finished it.---It depends on how long you have ____________ it? You should return it two weeks.
-You were injured in the accident, weren't you ? -________, but look ,I'm all right now.
_______of the money_______been spent recycling the rubbish.
_______yogurt do you need? -Three cups.
_____mothers both work in the same hospital.
In the street I met the professor_______gave us a talk last week.