Sentence examples for had to observe from inspiring English sources

Perhaps they had to observe dietary restrictions.

Instead they had to observe chemical reactions, see what happened and draw conclusions".

Margaret was in charge of the team of secretaries, who had to observe tight security.

They had to observe the same moral standards as anyone else.

Farmers in much of the country have had to observe alternate-day irrigation plans.

The US and UK had to observe democratic rules and they cannot be excused now.

And you have to observe it.

Then something would have to observe it.

You have to observe, to know, to judge".

I have to observe what is happening on the ground.

Though you do have to observe at high magnification.