1.have you seen_pen?--is it _ black one A.a;a B.a;the

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1.have you seen_pen?--is it _ black one A.a;a B.a;the
2.my mother is a teacher in _ university A./ B,a C.the
3.___of the land in that country __covered with tree and grss.A.Two fifth;are B.Two fifth;is
4.where _ you_the book?I can't see it.-I_it right here.But now it's gone.
A.DID;PUT;PUT B.have;put;put
5.my father is busy.he_TV after supper.A.didn't watch.B.doesn't watch.
6.I'D like to buy that coat.-Sorry.___.A.it has been sold.B.It had been sold
7.They each_a book.A.has B.have
8._you please tell me the time?A.shall B.may C.will
9.__is you teacher?-The one with a red scarf.A.who B.which
10.-I think students should be allowed to have part-time jobs.
--_____.that will be a good experience.
A.I think so B.I suppose SO ,
为什么你们答案都不一样。

1你看到过一支笔吗?他是一支黑色的,不难看出都表示泛指,选A
2我母亲是一所大学的一个老师,表示泛指,选B
3那个国家五分之二的领土都是树木和草地,land在这里是作为一个整体进行描述的,因此用单数,选B,land就相当于money,water
4你(之前）把书放在哪里了?(put这个动作已经过去),所以选A
5我父亲（平常）很忙,没空在午饭后看电视,表示的是一种习惯性的动作,用一般现在时,选B
6sell这个动作发生在过去的结果就是“我现在买不到了”,也就是说sell这个动作对现在造成了影响,选现在完成时,A
7each是they的同位语,可以把它忽略,因此选B
8shall表示一定的意思,语气很强烈,选A
9哪个是你的老师?戴着围巾的那个,所以选B
10表示赞同前者,用i think so,选A

One of the boys_____ a black hat.A have B there is C there a The black one is a Have you seen a dog?Is it — black and white one?横线上填什么? I have two cats one is black and____ is white A other B the The apple is delicious.I want to have _ one.A.the second B.a _ you choose make sure that it is a good one?A what B wherev 1.单项选择（） Who's _ boy in _ black?--It's jack.A.a,the B.the,\ whose watch is that?I mean the black ___.A it B one C this It is necessary to have _ test.A.third B.the third C.a third Do you konw that _lady in _ black She is so beautiful.A.one Is the black one OK? No,it`s___ ___.I want a cheap one I have a new pair of shoes.black and white.A It is B They ar