Henry killed the dog. I'll ask him why ________.
—I can’t find Mr. Smith. Where did you meet him this morning? —It was in the hotel ___ he stayed.
—Are you free after school? —Sorry, I’ve planned to treat a friend of mine to dinner ______ for help.
---How did your students express their thanks to you on Teachers’ Day? ---A gift together with many flowers _______ sent to me.
We arrived home at 9:00 in the evening, __________most people had already had supper.
This book is said to be a special one, which ___________ many events not found in other history books.