“Where is Mother.” “She is in the kitchenShe _______ the housework all morning.”

He is really an excellent doctor and he is____to becoming an expert in this field.

His parents, ________, did not look after him very well-the elbows of his jacket and his boots were badly worn [ ]

How long have you _________ your watch It looks new.—Only about three weeks.

The Whites _______many places of interestsince they came to China.