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：此题考查时态辨析。由于还在销售，就证明商店还没关门，C项用进行时态表将来。