1.Mary has written a postcard to her aunt already(改为否定句)Mary____written a postcard to her aunt____请不要只回答ABCD,

1.Mary has written a postcard to her aunt already(改为否定句)Mary____written a postcard to her aunt____请不要只回答ABCD, A book was written on the subject.He has written a book on this subject.时态? She has a friend _____(call)Mary Mary has a TV(改为否定句) Who_(have) a bicycle Mary has. jim and mary have/has a basketball Mary has a little white sheep The story__down and became world famous.A was written B has written C wrote He has written a book,the name____I have completely forgotten. he has written a Book _____name i have forgotten. This music ____ by a young pianist.A:was composed B:has composed C:were written D:has written This music ____ by a young pianist.A:was composed B:has composed C:were written D:has written mary ____a book last year,but i do not know whether she has finished ithas writtenwas writingwrotehad written write过去式wrote过去分词written Kitty has written a list. 为什么用written.过去式wrote过去分词written如何在句子中应用.如何区分?谢谢! --I have never been to Singapore.-----______.A.so has mary B.mary has too C.mary has,eitherD,neither has mary Who did the teacher______an article forthe wall newspaper?A.has write B.have written C.have write D.has written father is busy writing postcards this morning and /has written /ten so far.a :was writing b:has written; 为什么? Mary students enjoy the book Harry Pottrer_______ by JK Rowing. A was written Bwritten