单项选择题
In addition to setting the price of a product, business firms must decide （） to offer special discount and credit terms to their customers.
A.if B.which C.whatever D.whether
单项选择题 （） you have entered your new office building, you probably would like to refurnish it.
单项选择题 The outer packing of the black tea in small wooden cases looks （）.
单项选择题 The President has asked for budget cuts, and Congress has indicated （） willingness to legislate some of them.
