billy is writing a letter to his friend now,用yesterday改写,怎么写?

billy is writing a letter to his friend now,用yesterday改写,怎么写? Silly Billy! Silly Billy! Why is Billy Silly? 翻译问题原文：Silly Billy! Silly Billy! Why is Billy Silly? Silly Billy hid a shilling. Isn't BIlly Silly?hid a shilling 是什么意思?是“藏了一先令”吗?因为Billy藏了一先令,就 Whose boy is Billy? 翻译is writing a letter Look!This is a cat. name is Billy.填空还有一句（ ） is very good. He is writing a letter被动语态 He is writing a letter____the corner. Joe is writing a poem now.[祈使句] Billy Green is _____ English.选择：A.a B.an C.the D./快,急用~ L am writing a letter对am writing a letter提问 Billy is a student who enjoys watching football matches改为同义句 billy,says the teacher,is a boring fellow的汉译 英语的改写句子,时态学的太多了,快被搞死了..Billy is writing a letter to his friends now.(用yesterday改写)到底是要改成过去进行时还是一般过去时啊QAQ[欲哭无泪的窝]过去进行时的结构是：主语+was/wer Mr Smith_short storie,but he_a TV play these days.A is writing,is writing B is writing,writes C write,is writing D writes,writes This is Billy,my c___.Miss Williams is o___ teacher.Her father,___Williams,is a t ___,too. 读句子,用“am”“is”或“are”填空.A dog （）sleeping.l()writing a letter.Two lions()fighting.He()drinking.The rabbits()jumping.The panda()climbing. l teach lessons l am 阅读短文,判断正误：（5×2分） This is Billy and his brother’s bedroom.It’s not very big,but it is tidy（整洁）.There are two beds in the room.There is a desk between（在……中间）the beds.There are some She is not writing a letter.=She not writing a letter.