---would you like to go with us,please?
题目
---would you like to go with us,please?
---yes,i_____A.will B.would C.do D.can 为什么是A不是B?2.He___you more help,even though he was very busy.A.may have given B.might have given 为什么是A?3.The money was soon spent,so he ___go hungry.A.must B.had to C.might D.should 为什么是B不是D?4.____I take this book out of the library?No,you had better notA.Can B.Need C.Must D.May 为什么是D不是A?5.He _____Beijing,for i saw him just now.A.can not have gone to B.can not have been to 为什么是A不是B?
答案
第一题：因为此事情还没发生
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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