孝敬父母是中华民族的传统美德,也是现代公民的法律义务,要求我们
The room, although_________ to be kept locked, was often left open.
-----I am sorry for having been so rude to you. ---------That’s OK. I am sure you didn’t___________.
This book is said to be a special one, which __________many events not found in other history books.
Only when I read this story for a second time _________to appreciate its beauty.
I don’t think she’ll be upset, but I’II see her in case______________.