You shouldn't _____ too much time playing with your mobile phone. It's not good for your eyes.
根据本题语境可知，你不应该花太多时间玩手机。主语是 You，再根据其后的 playing 可知，所缺的词是 spend，故答案为 D。
Sharon wrote a story,and it _____ as a book in 2017.
本题考查 come 短语。come up 出来，出现；come on 快点；come out 出来，出版；come in 进来。句意：莎伦写了一部小说，它在2017年出版成书。根据句意可知答案为C。
This book is very _____ and I am _____ in it.
本题考查 interesting 和 interested 的区别。句意：这本书很有趣，我对它很感兴趣。修饰 This book 要用 interesting，修饰 I 要用 interested，故本题选A。