问题补充：
(·新课标全国卷Ⅱ)The watch was very good, and he 20 percent down for it.
A. paid
B. cost
C. bought
D. spent
答案：
(答案→)A. paid
B. cost
C. bought
D. spent
解析：选A考查动词辨析。句意：那块表很不错，他以20%的折扣价买下了它。A项表示“支付”，后跟具体的钱数，与for搭配，故选A。B项的主语一般是物；C项后面一般用“商品”作宾语，可排除；D项与后面的介词不搭配，其后应用介词on。
(·新课标全国卷Ⅱ)The watch was very good and he 20 percent down for it.A. paidB.
