V. Choose the word (A, B, C or D) that best fits the blank space in the following passage.
There are a __23__ reasons that kids should have smartphones. First, phones allow parents __24__ in touch with their kids easily. Parents can see their kids’ location and __25__ them up if there’s an emergency. Second, smartphones have various applications that prove __26__ in the educational or learning process. An app like Duolingo helps kids learn English and other languages. YouTube can also be a learning tool when it’s used __27__. Finally, smartphones help kids communicate __28__ friends. If you move away, you can still stay in touch. This happened to me when I changed schools. Now I can talk to my old friends while I make new ones at my new school.
