My father will com back ___ next week.A.sometime B.sometimes C.some times D.some time
题目
My father will com back ___ next week.A.sometime B.sometimes C.some times D.some time
Have you ___ why you are late again?
Jim is older than Mary but ___ (look) much younger.
答案
1 A 不定的某个时候（ 注：B 有时； C 几次； D 一段时间）
2 explained
3 looks
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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