II. 克漏字選擇 2% × 8 = 16% (16—19題為題組) 
(A) Debates on the effects of technology __16__ for centuries. While it is true thattechnology has long benefited humanity, it is known to have negative consequences too.Here are some examples.            The market for short-term video apps is competitive, and large players such asInstagram and Snapchat fight for superiority. __17__ , there are also literally thousands of“start-ups” looking to break into the market as well. One of these,__ 18__ target audiencehappens to be school children, is called Houseparty. This app uses split-screen videosoftware to simulate “hanging out” with friends. Apps like Houseparty__ 19__ acceleratedInternet speeds such as 5G, but this one in particular has drawn criticism from childprotection groups because of its option to invite strangers into chats.
【題組】16.(
(A) is existing
(B) existed
(C) have existed
(D) were existing )