—Shall we go out for a walk? —Sorry. This is not the right _________ to invite me. I am too tired to walk.

----What do you know the _____ of are the pig influenza in humans? ---- usually similar to regular human seasonal influenza .

Whatever he does, once he sets up a goal, he would start pursuing it without _______.

  .Last summer I had ______ in the south of France .

Sometimes we need both cultural________ and government action—a change in values and a change in policy—to promote the kind of society we want.