---I did very well in the Maths exam yesterday. ---I did _____ . I got full marks.
She is not certain about __________ she has done anything wrong.
People started to dig in the area for treasure, __________ much damage.
The Chinese language differs__________ Western language in __________ it uses characters which stand for ideas, objects or deeds.
When __________ why he was late again, Jack didn’t say anything.
It is well known that the Internet will let people have __________to huge amounts of information from their own houses.