find,hear,keep,lay,lose,make,teach,meet,sell,sweep,win,think,tell,begin,break,choose,drink,ring,writ
题目
find,hear,keep,lay,lose,make,teach,meet,sell,sweep,win,think,tell,begin,break,choose,drink,ring,write,draw,drive,swim,fiy,forget,give,know,ride,sing.这些单词的过去式和过去分词,急用!
答案
find-found-found hear-heard-heard lay-laid-laid lose-losed-losed make-made-made sell-sold-sold sweep-swept-swept win-won-won think-thought-thought tell-told-told begin-began-begun choose-chose-chosen ...
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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