can be done was done could be done must have been done will be done have been done
题目
can be done was done could be done must have been done will be done have been done
用这些,每个造一个句子.
上面的打错了
can be done
was done
could be done
must have been done
will be done
have been done
答案
1.Everything can be done if you set your mind to do it .
2.The mission was done already.
3.He told me an amazing story yesterday that how the mysterious mission could be done and that's the very part that i really wanted to know.
4.Nowthat he is here,his job must have been done.
5.We still have time,take it easy,the job will be done in 30minutes.
6.If i got there earlier,our task should have been done already.
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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