I will do _ useful thing instead of doing a useless one应该填什么A 还是THE

I will do _ useful thing instead of doing a useless one应该填什么A 还是THE I don't know what we will do this afternoon改为同义句I don't know _ _ _ this afternoon 33.---I hope will find this dictionary useful.A.Yes,it’s useful B.Certainly notC.Really?I do D.I’m sure I will I didn't do my homework because I was ill._ _ _ do your homework? I _ _ _ useful to _ some words of pop songs in English. Will I forget you,I can't do I don't know if his idea will _ _ (有效). 很简单的英语题目,回答下People always ask Suzy for _(意见）when they don't know what to do.I have borrowed many useful books from several _(library)in our city.在横线处填单词,注意词形转换. I don't mind _ I go ; I will go _ you want to go.空处填什么. I think it useful a_____,so I will take it. Today is monday.I am glad that I don't leave my homework at home or forget to wear the school stamp.I found that my handwriting speed is low.I decided to do my homework in a shorter time.This evening ,I will try whether it is useful. 组词成句I,if,I,don't,it,it,now,do,do,never,will组词成句I,if,I,don't,it,it,now,do,do,never,will don't smoke here,_ 后面跟do you 还是 will you I don't know when he _(come)back.when he _(come)back,I will call you I must thank him because he helps me with my studies=I must thank him _ _ me with my studiesIsn't your skirt the same as hers?=_ your skirt _ _ hers?Don't worry about him.=Don't _ _ _ him.When will he get to the cinema?=When will he _ _ the cinema?Ho Since i didn't know what to do,.改成_ _what to do I really don't know when I will start my trip=I really don't know_ _ _my trip. I'am sure it will be quiet useful是什么意思