What are they busy 后用加doing吗?（Wat are they busy doing?)

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• 帮替我解决英语作业.急what's the mother doing?she's ________（给.穿衣）Tommy.it's nine o'clock in the moring.________Jim__________(have)an English class.look!Tom with his friend ____(piay)football there.they are busy with the new house_______-(decorate)which class has______-(many)boys ,class 5 or class 6怎么两个回答都两样啊。
• What-------- interesting work he is doing为什么这里不填a?语法书上面不是说抽象名词被一个形容词修饰时,加不定冠词吗?比如：a good memory
• be busy with 后加名词,后面可以加动名词吗?比如说,i'm busy with doing my homework.
• be busy with sth.spend on sth.be busy doing sth.spend doing sth.keep on dong sth mind doing sth这一些总称什么,这些东西是规定的吗?介词也是吗?如
• 改错 what do you think is he busy doing
• 忙于做某事为什么要用be busy doing sth 可以用be busy to do sth吗
• [ ] What are you busy ___ these days?A.do B.to do C.doing D.does
• 英译中what are you busy doing for?-For the final exams
• What are they busy 后用加doing吗?（Wat are they busy doing?)
• 首字母填空答案“What are you busy with yourself,Mom?” the girl of six years old asked her mother.“Making dinner for the neighbor aunt.” “Why?” “Because the other day the aunt l___81___her dear daughter in the earthquake and is so sad now.We must take g___82___care of her these days.” “Why n___83___our care?” “Because from then on the aunt can’t do what she liked to along with her daughter.Making dinner and doing housework are also becoming so d___84___.I don’
• the doctors have tried everything they can___(save)the sick and injured 为什么 injured
• What are the man and the woman doing?这句话中的are对吗?为什么不是is?为什么?详解.