It was unusual that such close neighbors ______ not know one another.
My mother insisted on sending me to the hospital, _______I received good medical treatment.
When ______ about the possibility that Justin was taken by aliens, Detective Sam Peterson said that there was no hard evidence about this.
The father along with his children ______ going swimming.
I am very _______ in the book.
Three mountains, Meili, Baimang and Haba, which are covered snow, tower the land.