While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.
I don’t mean __ you because what I have said really means __ you to be good.
The thief missed __ and __.
I don’t allow __ in my drawing-room. I don’t allow my son __ at all.
The book __ by him is difficult __.
I remember __ to the seaside by my uncle when I was a child. We forgot __ an overcoat and I felt very cold.