问题补充：
Being popular with customers , the products well and in two months .
A. sell ; sell out
B. are sold ; sell out
C. sell; will be sold out
D. are sold ; will be sold out
答案：
A. sell ; sell out
B. are sold ; sell out
(答案→)C. sell; will be sold out
D. are sold ; will be sold out
解析：“因为很受顾客喜欢，这些产品卖得很好两个月内就会卖完。”第一空表示事物的性质所以使用sell 的不及物动词，第二空表示“卖”的动作所以用被动语态，答案C。
