__________ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
They arrived at the farmhouse, in front of which________. A is sitting a boy B. sat a boy C. a boy sat D. a boy is sitting
All possible means ________been taken to prevent the river________.
The government is considering the environment-friendly plan which some scientists would like to see________soon.
________late, but also he forgot his books.
We'd like to do something for you________what you've done for us.