Because the shop , all the T-shirts are sold at half price.
A. has closed down
B. closed down
C. is closing down
D. had closed down
网友回答
A. has closed down
B. closed down
(答案→)C. is closing down
D. had closed down
解析：考查时态。Close down关闭；本题用现在进行时代替将来时，指代即将发生的事情。句意：因为商店即将被关闭，使用的T恤都半价出售。根据句意说明C正确。