Spook worried he wouldn't be of much help in the critical days to come.

It offered little useful advice in the critical early days.

Today was the most critical day, and he was leaving nothing to chance.

But he warned that critical days were approaching and said they still had time to change their policies.

Nothing that the bishop did in these critical days was not known.

In its operation on the critical day, all safety rules were totally ignored.

One critical day at the office can wipe it out.

The plane crash has set our schedule back by some very critical days.

Yes, I do happen to know that these are critical days.

You do not spend four or five critical days with no communication.