"Well, if there is nothing to be learned here, we had best go inside."
But progress in research does seem to go best when the scientists are left to themselves.
Now you'd best go to ground soon and keep in cover.
And you'd best go to the toilet before you leave.
"Then I suppose we had best go down and get him out."
I had best go and come back later, when they are done, he decided.
I'd best go take care of it, and then beg some time for myself.
So how do you feel we should best go about this?
You'd best go back to your master and learn a new one.
"You'd best go with them and put on the kind of clothes they'll want you in," he said.