She brought with her three friends, none of __________ I had ever met before.
“The day is coming _____telegraph wires will be _____on to houses just like water or gas.” He said in his letter to his father.
_______ she finds out that you’ve lost her book?
It is ______ great pleasure to meet the expert who is doing research on _________ archaeology.
People who cannot _____ between colours are said to be colour-blind.
When we went past her house, we heard her ____ in her room.