_____ of them knew about the plan because it was secret.

I’m moving to the countryside because the air there is much fresher than ________ in the city.

At last the poor man had to give up. He found __________ no use begging for more.

I tried several jackets on, but         of them looked good on me.

—Which of those electronic dictionaries do you like most? —        . They are both expensive and of little use.