다음 빈칸에 들어갈 가장 적절한 것을 고르시오.
1. Individuals _________ to loud noise for long intervals may suffer temporary or permanent loss of hearing.
(A) exposure
(B) exposing
(C) exposed
(D) expose
2. Their room was on the fifth floor, its window _______ the garden.
(A) overlooks
(B) overlooking
(C) overlooked
(D) to overlook
3. The doctor ________ her the pictures of her body, she got surprised at the fact that she was dying.
(A) showing
(B) showed
(C) shows
(D) to show
4. Silver is the best conductor of electricity, copper _________ it closely.
(A) to follow
(B) being followed
(C) following
(D) followed