问题描述：
2. Harry will not be able to attend the meeting tonight because ________ a lecture
A) he will give C) he will be giving
B) he had to give D) he will have given
选C 为什么不选A
A) he will give C) he will be giving
B) he had to give D) he will have given
选C 为什么不选A
问题解答：
我来补答展开全文阅读