Choose the correct form of verb:
(1) My scissors ________ not sharp.
(A) is
(B) are
(C) has
(D) was
(2) Keep quiet, we are _______ to the radio.
(A) listen
(B) listened
(C) will listen
(D) listening
(3) We have not ________ him for a year.
(A) saw
(B) seen
(C) see
(D) seeing
(4) I have _________ all my savings.
(A) spended
(B) spend
(C) spent
(D) would spent