单项选择题
Susan must（）quite well on the exam since she seems so confident of passing.
A.do B.have been doing C.be done D.have done
单项选择题 I guess Jones didn’t have a chance to win the election.（）the people in the city voted for his opponent.
单项选择题 （）, the book has many mistakes.
单项选择题 The only thing（）really matters to the children is how soon they can return to their aunt and uncle’s farm.
