A sum of pens are sold a 20% discount,still make a profit of 20%,find the profit percentage beforediscounted

A sum of pens are sold a 20% discount,still make a profit of 20%,find the profit percentage beforediscounted a box of colour pens are there a box of pens here...应该用IS 还是ARE? a small sum of a large sum of a sum of money Which of the two pens ______Tom's?which of the two pens ______Tom's?A.is B.are C.have D.has 选哪一个,我认为选A, There are so many kinds of pens here.I can'tdecide______.A.when to choose B.to choose which C.which one to choose D.to choose which oneB和D哪个对?为什么? a bank of electronic pens的意思 a sum of exponentials是什么意思 Bidders are required to provide a breakdown of any composite or lump-sum items.怎么翻译? there ____ a pencil,two pens and there books on the desk,but none of them ____mineA is;is B be;are C are;are D are;is 1 There are so many kinds of pens here.I can't decide ____ A which to chose B what to chose2 ___ is her son?The boy on the right wearing blue coat.A Who B Which3 I have ____ chores to do today that I can't go out with you.A so many B such many4 You a 6 I am one of the few people left.So there ______ .a．are none left b．is one left c．are some left d．are a lot left 我是这些中唯一留下来的 B 不对么 只有我留下来7 How much ______ A large sum of money.a．you have been offered Are these _______.A.yours pens B.pens yours C.yours pen D.your pen选择题 Are these _______.A.yours pens B.pens yours C.yours pen D.your pen who can translate these sentences into chinese1.Pencils and pens flew over copies of the story as the students marked words they did not understand,so they could ask the meaning.2.Some are in the United States because of their husband's work.Others a ( )21.Where’s Lily?We are all here her.A.beside B.about C.but D.with( )22.I’m interested in animals,so I every Saturday working in an animal hospital.A.pay B.get C.take D.spend( )23.Father gave me several pens,but I like ___ of them.A.none B.both