选择题
1、All of us should learn how to ( ) the new machine. A、rive B、run C、open D、do 2、I will give a talk tomorrow.I am thinking about ( ) A、what to say B、how to say C、what can I say D、hoe can I say 3、A:Sorry,but ypur address again,please.I( )not catch it . B:It is 18 Hong Xing Road . A、did B、do C、will D、would
答：选第2个详情>>
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>>
