Right now, lots of people search for products on the Internet but still buy them at stores. Internet shopping will really when people are sure that it is safe.
A. set up
B. set off
C. take off
D. take up
网友回答
A. set up
B. set off
(答案→)C. take off
D. take up
解析：可联系答.案.网客服索取。