Students are busy___the exams at the end of the term
题目
Students are busy___the exams at the end of the term
A.prepaing for B.to prepare for C.preparing to D.to prepare to
答案
A首先 be busy doing固定搭配,for表示目的,为考试做准备
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
最新试题
热门考点