1、Nothing but cars in the shop.
A.is sold B.are sold C.were sold D.are going to sell
2、No one except Jack and Tom the answer.
A.know B.knows C.is knowing D.are known
3、Seventy percent of the students in our school from the countryside.
A.is B.are C.comes D.are coming
4、 of the money used up.
A.Three-five, are B.Three-fifths, have been
C.Three-fifths, has been D.Third-fifths, is
5、The number of the people who cars increasing.
A.owns, are B.owns, is C.own, is D.own, are
5、C 定语从句看被修饰的先行词：the number of作主语用单数形式。