If the drought________in Southwest China, the crops will be ruined. Worse still, both people and animals will be threatened with a lack of drinking water.
The young man insisted that he _____ nothing wrong and _____ free.
He is talking so much about America as if he _____ there.
She made the demand that the journalists _____ at once ______ Iraq.
The teacher demanded that the exam _____ before eleven.
You promised your friend a letter; you ought to ______ days ago.