I know not how; but please keep a careful watch over Jeremy and yourself.

I kept a careful watch on them when the stock was built up.

"Well, right now we can't do much except to alert everyone to keep a very careful watch on the situation in Israel."

The two men climbed outside while the rest kept a careful watch.

However, if it were possible to keep careful watch over a longer period, you would discover two interesting things.

I should have expected it and kept a more careful watch.

It is important, none the less, to keep a careful watch on progress.

The count, after that, kept a more careful watch over himself.

Nothing can find them if they keep careful watch, even at the edges of the city.

Still keeping careful watch, we made our way to the sidewalk.