NASA is now going to put the telescope right.NASA____it.A is repairing B has already repaired

题目

NASA is now going to put the telescope right.NASA____it.A is repairing B has already repaired
C will be repairing D to repair ,选择正确答案,及分别说出每个答案为什么对与错

答案

选C will be repairing是将来进行时,正确
A is repairing是现在进行时,第一句明明说是将来是事情,故错误
B has already repaired是现在完成时,动作还未发生,怎么就完成了呢?错误
D to repair这是个非谓语动词,不能充当谓语,错误

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

奥巴马演讲不用看稿子.为什么中国领导演讲要看?

想找英语初三上学期的首字母填空练习……

英语翻译