If you cannot have a good command of grammar as well as precise usage of each word you’ve learnt, it is ________ for you to use English flexibly.
I would rather buy a house in the suburb than ____ in the city.
He feels that his health ____ owing to ____ a long walk every other day.
Although John was the eldest in the family, he always let his sister _____ charge of the house.
The island where these rare birdsnest has been declared a _____.
Kate's ambition to become a nurse _____ from a desire to help others.