Unless _________ by the police, you should keep silent over the accident.
She can’t help ______ the house because she’s busy making a cake.
The weather is not fine today. I think he is _________ to turn up , though.
At the railway station, the mother waved goodbye to her daughter until the train was _______.
We have no idea at all __________.
_______is certain ______ the Normans conquered England in 1066 and then English changed.