Heart disease is the leading cause of death in the United States, _____ a research report.
A.according to B.because of
C.thanks to D.instead of
My roommate is a ______ person. He feels sure about his own ability.
A.careful B.confident
C.patient D.logical
When a new problem _____ in the experiment, no one could do with it apart from Mary.
A.arose B.was came up
C.rose D.came up with
Tom didn’t work hard at his lessons; ______, he failed in the exam.
A.as a result B.after all
C.as a result of D.in all
_________ this is the biggest progress you have made this term.
A.In the way B.By the way
C.In a way D.On the way
The villagers in polluted areas go for miles __________ clean water every day.
A.searched for B.in return for
C.looking after D.in search of
