注意：此页面搜索的是所有试题
题目内容
（东北林业大学-大学英语3）
7. (单选题) _____ scores of times ,but he still couldn’t understand it .(本题2.0分)
A、 A Having explained
B、 B Having been explained
C、 C Though it was explained
D、 D It was explained
A、 A Having explained
B、 B Having been explained
C、 C Though it was explained
D、 D It was explained
参考答案