It's necess ___ you___make a call to your mother

Question

A.for,for B.to,to C.to,for D.for,to

Answer 1

D 表示这一事件的性质用for,形容人用of It's adj for sb. to do sth.

Answer 2

D
(It is + adj + for sb. to do sth.)

Answer 3

D

Answer 4

D.for,to

Answer 5

D