Before becoming a pilot, he spent quite a long time ____. A．to be trained B．being trained C．training...
2023-02-08 16:01:30 68次 0910学年湖南省高一上学期期末考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Before becoming a pilot, he spent quite a
long time ____.
|
A．to be trained
|
B．being trained
|
C．training
|
D．to train
|
本题链接：
