this exercise is a little d_____,i couldn't work it out

this is good exercise 为什么不是this is a good exercise ? This is _____easy exercise填an还是a This Is Not An Exercise 歌词 this exercise is a little d_____,i couldn't work it out What is this?----It is a (l ) for Jane 初三英语转换句子题Exercise A is easier than Exercise B-> Exercise A is _____ _____ than Exercise B this old man is healthy because he often 应该选哪一个a.exercise b.smokes c.sleeps d.sings this is a loose comfortable outfit you wear when you exercise 是神马单词（t开头）KET This exercise is easy to do.(改为复数形式) This apple is small.l want a b______ one. this is a p_______ evening.l like it. do you know when basketball was invented?原文：If you travel around China you will notice a very popular activity everywhere you go--basketball.This much-loved and active sport is enjoyed by many,for fun and exercise.The sport of basketball is a l The twins uncle every day A.exercise B.exercises C.is exercise D.is exercisesA.exercise B.exercises C.is exercise D.is exercises This group of girls often --------in the park.A.exercise B.exercisesC.exercisingD.to exercise l am doing M_ exercise,and I want a computer SWIMMING IS _____ A a good exercise B good exercise Cgood exercises D a good exercises 初二英语选择题,求讲解The teacher and writer ____ doing exercise this time yesterday.A.is B.was C.are D.were正确答案是B.求讲解! The price of this exercise book is the lowest,----- it's the most suitable for high school student,A.since B.while C .as D.when 理由?