--- ______ do you improve your listening skills? --- I improve it _______ listening to tapes.
A.How; with | B.What; by |
C.How; by | D.What; with |
--- ______ do you improve your listening skills? --- I improve it _______ listening to tapes.
A.How; with | B.What; by |
C.How; by | D.What; with |