We had to___to pay for our children’s education
Nobody but doctors or nurses and those _______ by Dr. Hu _______ to enter the patient’s room.
Many of the creatures in Rowling’s world are not real, and much of ________ happens is strange.
______ back, they talked about the persons and things ______ they could remember at school.
a written permission, he had to write another letter to the president of the university.
— How come your father can read books in German? — Well, he on a project with some German engineers for 3 years when he was young.