I’m reading a letter________my friend.A.of B.for C.from D./应该选谁啊?

I'm writing a letter i'm reading a newspaper ___ Mr Zhang is writing a letter我填when对吗?为什么 应该填什么? I'm reading a book____art I'm reading a story I‘m writing a letter.改成问句 i ()()()reading the letter我读这封信很费劲 I like reading .I’m a m_____ of the Reading Club.填什么? 小学四年级英语考卷答案三、选择题.( 15分 )( )1.What are you doing ? I'm a letter . A. read B. reading ( )2. They some apples last week. A. ate B. will eat( )3.People speak in I'm writing a letter 改为特殊疑问句 I`m (reading a newspaper.)[括号里提问) “I”（ ） a letter “I”（ ）a letter But I () a letter I ( ) a letter I was writing a letter ,He was reading a newspaper（用适当的连词连成一个复合词语） ___ a second time ,the meaning will became clearer.a,As I read the letter b.Reading the letter c.Having the letter d.The letter being read为什么不能选D What are you doing,MeiMei?I am reading a letter ___ my pen pal.She is studying ___Japen. I enjoyed 什么 your letter in the school magazine A read B to read C reading D reads