I ______ have watched that movie --- it will give me horrible dreams.
George Washington was born in 1732 in a rich family in _______ is now the state of Virginia.
I don’t know who invented _______ telephone, it’s really _______ most useful invention.
I would appreciate ______ if you could let me know in advance when the meeting will be held.
--- How did your students express their thanks to you on Teachers’ Day? --- A gift, together with many flowers ______ sent to me by my students.
--- Why do you look sad?---There are so many problems ______.