几道选择题
1.you try to knock( ) a group of ten pins placed ( ) a triangle A down on B at on C down in D at in st week my cousin borrowed my maths book( ) didn't( )it to me A but returned B and returned C but back D and return ctoes across the country say many children( )exhaustion and stress A are suffering from B are suffering C were suffering from D are suffer 要解释清楚 最好每句给翻译一下
1. A 意思是“你试着把放在一个三角形上的一组10个图钉钉进去”。knock at 指敲门窗，knock on 指敲打。in 指三角形内，on指三角形上 2、D 用排除法，didn't后只能用动词原形。back做动词要和介词搭配，不能单用！ 3. A 固定用法，且时态与主句一致。sufer必须与from搭配使用！因为suffer不及物！
答：rk rough 3.heat ngry rden 6.quiet 7.turn idge详情>>
答：B 被动语态，be found to do. A中的made与found均为过去分词，冲突！详情>>
问：hArd work 和hArd--working有什么区别
答：一个是名词 一个是形容词撒详情>>
