He is talking so much about America as if he _____ there.
The police always take ________ of dogs’ sharp sense of smell to search for the survivors in the earthquake.
— I’m sorry to have hurt you.— Forget it. You didn’t mean ________, did you?
My life has been _____ with many milestones and accomplishments of which I am proud.
Although some unexpected difficulties have ________ in the process, we are confident that we can handle them.
As we all know, the problems of environmental pollution facing us today are far from ____.