1、Section Learning about Language.单句语法填空1Well，we _have_been_finding_(find) the bones of tigers and bears in the caves，and we think these were their most dangerous enemies.2He _has_been_writing_(write) a novel，which will be finished next month.3The little boy is dirty all over because he _has_been_play
2、ing_(play) in the mud all the morning.4He _has_been_lying_(lie) in bed for two weeks because of his broken leg.5You know，I _have_been_looking_(look) for a job for three months，and this is my first formal interview.单句改错1He had been writing the novel since last year._hadhas_2She looks very tired.She h
3、as working all day._has后加been_3We had been friends ever since we met at school._hadhave_4People have been sung these folk songs for hundreds of years._sungsinging_5She have been cycling to work for the last three weeks. _havehas_6I hasnt received her letter for a whole year._hasnthavent_7This time y
4、esterday, they are having lunch._arewere_8I am writing a letter when he came._amwas_9I asked him to tell me what is troubling him._iswas_10We had been waiting for you for an hour.We dont want to wait any longer._hadhave_.完成句子1自从上周以来一直下雨。It _has_been_raining_ since last week.2我累坏了。我一直工作了一下午了。I am tired out.I _have_been_working_ the whole afternoon.3他已写了一部小说。He _has_written_ a novel.4你最近见过他吗？_Have_you_met_ him recently?5他们结婚将近15年了。They _have_been_married_ for almost 15 years.
