—I know that she is a very careful person.—Yes, that’s why I feel surprised that she _______ make such mistake in the math exam.
—This is picture I told you about . —I see . Isn’t it beautiful one ?
As we all know, ____ man cannot live without ___ water.
—Who did you stay with ? —______ .
She is in a poor ____f health, which worries her mother much.
I bought a new type of cell-phone, which was the ____ of all my classmates.