There __(be)a telephone call for you five mintues ago
题目
There __(be)a telephone call for you five mintues ago
如题..
填空写什么?
These trees in our school ________ten years old
A.were planted B.are planted C.planted D.was planted
答案
1.There was a telephone call for you five mintues ago.五分钟前是过去时态,你要选择过去时.
2.These trees in our school ________ten years old.
A.were planted B.are planted C.planted D.was planted
这句的话考虑这些树是复数,并且树是被种的,已经种了有十年了,为过去时,综合考虑答案为A.
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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