Choose the best answer to fill in each blank:
Flowers (I)______ in summer and leaves gathered in autumn can be pressed and used to make beautiful designs, while larger flowers and sprays of leaves can be (II)_______ in an (III)_______ natural state by drying them, which is best done in the open air. (IV)________ of dried flowers make really beautiful winter decorations and will sometimes last for year (V)_______ end.
(III)
A.almost
B.mostly
C.most
D.utmost