1. (2023七下·宁乡市期末)  When did the girl go to bed last night?

I'm so tired today, I went to bed at half past eleven last night!<br />Oh! You went to bed too late! I went to bed at 9.30.<br />I'm so tired today! I went to bed at half past eleven last night!<br />Oh! You went to bed too late! I went to bed at 9.30.