单项选择题
A. that B. it C. which D. what
There has been a decrease（）the number of students enter...
单项选择题There has been a decrease（）the number of students entering the Medical College this year.
A.on B.over C.in D.of
Are you going to keep me（）all day longA.to wailB.waitC....
单项选择题Are you going to keep me（）all day long
A.to wail B.wait C.waiting D waited
（）ballpoint pen was invented by（）Hungarian refugee nam...
单项选择题（）ballpoint pen was invented by（）Hungarian refugee named Lazlo Biro.
A.A;a B.The;a C.A; the D.The; the
