19.I’m sure these documents will be___great value to you.
A.about B.from C.with D.of
20.This furniture is not suitable for our use,but maybe we could give it to___.
A.another one B.someone else C.the others D.each other
21.The examiner made us___our ID card in order to be admitted to the test center.
A.showing B.to show C.showed D.show