When someone is in trouble, we should ________ a friendly hand.
The hotel porter ______ anybody who wasn't wearing a collar and tie.
Nothing ______ stop us from ______ this plan.
_____ medicine works in a human body is a question ____ not everyone can understand fully.
----Any news about Bill Clinton? ----He left power three years ago and has a little now and a little then been ______.
Beckham insisted the famous-brand car ____ to be sold out in order to pay back the debt.