Have to

You have to wear a seat belt.

I have to go to the bathroom.

I just have to have that shirt.

I was about to say that I had known the Celebrity from the time he wore kilts. But I see I will have to amend that, because he was not a celebrity then, nor, indeed, did he achieve fame until some time after I left New York for the West.

A nasty, empty feeling began to crawl up inside me. It was the same sensation I used to have sometimes as a child when I got to fancying that horrors were lurking in the shadowy corners of the bedroom; when I daren't put a foot out for fear that something should reach from under the bed and grab my ankle; daren't even reach for the switch lest the movement should cause something to leap at me. I had to fight down the feeling, just as I had had to when I was a kid in the dark.

Before the new station could be built, a private overbridge had to be raised, and the railway regraded.

Energy has seldom been found where we need it when we want it. Ancient nomads, wishing to ward off the evening chill and enjoy a meal around a campfire, had to collect wood and then spend time and effort coaxing the heat of friction out from between sticks to kindle a flame.

The railway ran through the resort's narrow streets up to Weymouth Quay station, with thoughtlessly parked vehicles sometimes having to be bumped out of the way.

that has to be the postman; it has to be an electrical fault