The doctor advised that Mr.Malan (　)an operation right away so as to save his life.

A.knows

B.knew

C.had known

D.would have known

A.in ease

B.at ease

C.with ease

D.with easiness

A.from

B.for

C.to

D.with

A.down

B.in

C.off

D.out

A.job

B.work

C.profession

D.living

A.not going

B.not to go

C.not having been going

D.not to be going

A.let you down

B.let you out

C.let you in

D.let you by

A.talk

B.talked

C.will talk

D.talking

A.It

B.That

C. What

D.As

A.not to do

B.not to be done

C.not to have done

D.not having done