It’s important _______ us students to make a plan _______ our studies before a new term starts.

The doctors and nurses did best to fight Zika Virus(寨卡病毒) in Brazil.

V programs, according togovernment officials, will be produced _____ people’sconcern over food safety

The rich man __________ much food__________ the poor families during the hard time.

Nobody believed a 92-year-old man could run a marathon_______he passed the finishing line. People of all ages can challenge themselves.