It is necessary that an eficintworker（）his work on time.

A. that it necessary

B. necessary that

C. it necessary that

D. necessary of it that

There was nothing in the letter of ________ importance. 

A peculiar

B necessary

C basic

D particular

It is necessary __________ the book immediately.

A、that he returns

B、his returning

C、for him to return

It is not necessary to declare ______ in the Health List.

A.Appendicitis

B.Cholera

C.Plague

D.Typhus fever