There were few doctors, _____ he had to work very hard _____ his own.
—Do you hear the noise outside? —Yes.There must be some kids________outside.
—Tom,where is your father? —I’m not sure.He________in his office.
Some people________feel sick when they read a book in a car or on a boat.
—________does this scarf belong to? —Let me see.Oh,it may be________.
She is leaving________Beijing tomorrow.