there are some pieces of paper on the floor.Janet ____ A picked it up B picked them up

There are some [ ] on teacher's table 1.pieces of papers 2.papers 3.pieces of paper4.piece of papeers 英语翻译There are some( ) ( ). there are some there are some -------(gooes) There are some ---(German)there. 请问there is some piece of paper中be动词用单数还是复数 piece呢? there are some 还是there are two There are only some apples are there+some还是any Because there are some bracings. there is/are...some...some...2个 英语翻译there are some fruit trees there . there are some fiowers there 写出问句 There is some bread.还是There are some bread.为什么 there is some milk 还是there are some milk there is some beef还是there are some beefwhy? 改错：There is some sweets.There are some milk.There are some potatos.are there any fruits in the fridge? 是there are any building还是there are some builing?