It was on Friday________Paul sold all his old books to his roommate.
A.when B.which
C.whether D.that
The change was so ________that none of the workers noticed it.
A.actual B.extreme
C.active D.gradual
It was on Friday________Paul sold all his old books to his roommate.
A.when B.which
C.whether D.that
The change was so ________that none of the workers noticed it.
A.actual B.extreme
C.active D.gradual