填空题 D. Complete the passage, choosing appropriate words. These days, more and more people are 1.________ (did / do / doing) their shopping online. One of the best things about online shopping is that it is 2.________ (convenient / risky / fake). You can shop anywhere and anytime. Sometimes you can find things cheaper online too. However, there are cons of shopping online. On the one hand, you may need 3.________ (paying / pay / to pay) extra shipping costs. On the other hand, when you buy things online, you need to wait too. You won't get the 4.________ (refund / policy / item) immediately, and when it finally 5.________ (arrives / arrived / arriving), it may be different to what you expected