注意：此页面搜索的是所有试题
题目内容
（国家开放大学英语语法）
-When are you leaving? -My plane _____ at six.
A. took off
B. is about to take off
C. takes off
D. will take off
A. took off
B. is about to take off
C. takes off
D. will take off
参考答案