==有点蒙It'salongtmesinceihacemethim.we'veneverbeentoanamusementago.这个忘记了完成时中的过去==Ididn'tfinishtowritemycompositionbecauseiranoutoftimeTheyhavebeendiscussingtheprobelmfortwoandhalfhour

Question

==
有点蒙
It's a long tme since i hace met him.
we've never been to an amusement ago.这个忘记了完成时中的过去 ==
I didn't finish to write my composition because i ran out of time
They have been discussing the probelm for two and half hours.
A policeman stopped the thief when he wanted to run after.
The number of students in our class are fifty.
Nobody but Jim and Tom were in the room yesterday.
The police is looking for the lost child.
单选
Two months _______ quiet a long time.
Yes,i'm afraid that he will miss a lot of his lessons.
A.is B.are C.was D.were
On every piece of paper _______pictures of some horses.
A.is B.are C.has D.have
Class one ________all out when the door opened.
A.are B.is C,were D.was
The rich ______ always happy
A.aren't B.isn't C.doesn't D.don't
Our knowledge of the computers ___ growing all the time.
A.be b.is c.are d.were
能说明一下单选为什么吗

Answer 1

改错题
1.It's a long time since i met him.(since后面不接完成时）
2.we've never been to an amusement before.(ago不和完成时搭配）
3.I didn't finish writing my composition because i ran out of time
（finish+doing）
4.They have been discussing the probelm for two and a half hours.
（记住是2个半小时是two and a half,不是two and half）
5.A policeman stopped the thief when he wanted to run away.
（run after是追赶的意思,意思和句子完全不符合）
6.The number of students in our class is fifty.（The number是主语,不是students,而数字是单数）
7.Nobody but Jim and Tom was in the room yesterday.(就近原则）
8.The police are looking for the lost child.
单选：
1.A；Two months作为一个整体,而且后面的a long time也说明应该用单数形式.
2.B；这是个倒装句,把它看成pictures of some horses are on every piece of paper.
3.C；从all可以看出是pl,而且,Class one在指一班同学时也是复数（我原来好像选错了）
4.A；The rich是指富人集体名词.
5.B；knowledge不可数,单数