HE HAS BEEN WRITING IT THE WHOLE NOON AND HE STILL (IS)..为什么括号内是用IS?

HE HAS BEEN WRITING IT THE WHOLE NOON AND HE STILL (IS)..为什么括号内是用IS? He has been writing the book since he school?中填哪个. he has been writing the composition the whole morning and he still ishe has been writing the composition the whole morning and he still __________,A has been B does C has D is 答案为何选D呢? 31.He has been writing the composition the whole morning and he still_____.A.has been B.does C.has D.is 高中英语时态题He ___ articles for our wall-newspaper these three years,and he ____ about forty articles.A.has been writing; has written B.has been writing; wroteC.is writing; has been writing D.has written; has written请说明为什么不选b 10.He has been writing the composition the whole morning and he still ______空里填does可以吗 She has been writing poems since her childhool.(改为复合句) She has been writing poems since___ 1.He has been writing this story (for one year).(对括号部分提问)2.I have been (standing) for five hour.(同上) Sb has been involved in proposal writing怎么翻译 She ____letters all morning and felt tired.A has been writing B writes C had been writing D has written long has he been away? 2.Tom has been writing letters all afternoon,but he should have finished them by now,______?反义疑问句的答案应该填什么,希望有解析 Tom has been writing letters all afternoon,but he should have finished them by now,______?没看懂您的答案这是我提问的网址, he has been working on the paper.请问此句话,work on有写的意思吗? 与writing the paper意思有区别吗? He has never been abroad,has he?怎么翻译 He has no pen_____.A.to write B.writing C.to write with D.writing in He has never finished writing the novel.为什么用writing 不用原形 Father is busy writing postcards this morning and______ten so far.A.wrote B.was writing C.has written D.has been writing为什么选D?D是什么时态?