This boy is working hard.划线部分提问,划线部分是working hard

This boy is working hard.划线部分提问,划线部分是working hard the students are working hard(对划线部分提问)hard划线 my math teacher said I was hard-working对划线部分提问 I was hard-wo The twin sisters are more hard-working at school.(对划线部分提问,线划 the desk is hard and smooth.(对划线部分提问）（划线部分是 hard and smooth） They worked very hard this morning.划线部分提问 jim and i are working对jim and i划线部分提问是用who is working 还是are （对划线部分提问） They worked very hard this morning .划线部分：worked ve This boy is working hard on his studis(改为一般现在时) 翻译This boy is working hard on his studies. They are （working hard）就括号部分提问 The students are working hard 画线部分提问