— What's the matter with the man hanging his head there?— Well, if you _____ know, he was caught stealing my bike.
I’m not ill. __________, I ’m very healthy.
We do not permit _________ in the office.
I believe that Mary hurt her boyfriend’s feelings on purpose rather than __________ as she said.
__________ makes the school famous is __________ more than 90% of the students have been admitted to universities.
We hope to finish our experiment________.