用just,already,ever和yet填空
题目
用just,already,ever和yet填空
1.Let me tell you today's news.I have ____ read it.
2.These students have ____ played games for a long time.
3.Have you ____ been to the Summer Palace before?
4.No one has discovered the secret between us ____.
5.---Jack,why are you watching TV?Have you finished your homework ____?
---Yes.
答案
1 just 让我告诉你今天的新闻 我刚刚看完
2already 这些学生已经玩了很长时间了
3ever你以前去过故宫么?
4 yet 还没有人发现我们之间的秘密
5 yet jack 你怎么在看电视?你写完作业了么---写完了!
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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