Some trees weren't planted by people last year.不是否定句中用any吗,怎么用some?

Some trees weren't planted by people last year.不是否定句中用any吗,怎么用some? There used to be some big trees by the lake, ___________? 怎么变反义疑问句?只有一种变法吗？ 可以用weren't there吗？ weren't Weren't 第10题 There used to be some trees by the lake,_________?A、was there B、were there C、weren’t there D、wasn’t there选择 C 确错了.到底是哪个答案?哪个是正确答案？ These trees were planted last year.变成否定句They weren't planted last year.为什么these trees 要用they 连词成句 there,lots of,trees,here,weren't,two years ago 反义疑问句：There used to be a lot of trees here,____there?为什么可以用weren't? They weren't old weren't是什么意思 Thry weren't old Thry weren't old 请说明理由1,these trees must have been planted three years ago.___?a.weren't they?b.must'nt theyc.didn't theyd.haven't they2.an iron and steel works ,with some satelite factories,__to be built herea.are goingb.is goingc.shalld.will3.the boy and 一道英语选择,These trees must have been planted three years ago,____?A weren't they B must't theyC didn't they D haven't they There A(weren't) B(some) televisions C(or) radios D(in the past).改错 Some people don't know how important trees are ( ) humans. 10秋大学英语4网上自测题10．第10题 单选题 There used to be some trees by the lake,_________?A、was thereB、were thereC、weren’t thereD、wasn’t there11．第11题 单选题 Large quantities of water _______ cooling purposes.A、 Some of them agreed with him.Some of them ______.A.aren't B.didn't C.weren't D.don't