The nurse was very kind to the boy at first, but finally, her ____ gave out and she lost her temper. 

Due to the policy of free highway fees on major holidays, too many passenger cars are trapped on the highways, causing heavy traffic jams, some even _______ for several hours.

Not knowing how to grow crops，the primitive people had no ______ but to gather the fruit and hunt animals for food.

The manager promised to keep us______ of how our business was going on.

 She must be looking forward as much to his return as he himself is to _______ her.