注意：此页面搜索的是所有试题
题目内容
（河套学院-大学英语）
8. (单选题) I didn’t realize he was a famous film star ______ he took off his dark glasses.(本题3.0分)
A、 when
B、 until
C、 unless
D、 once
A、 when
B、 until
C、 unless
D、 once
参考答案