---What is our earth like ________from the moon? ---Well, our earth, with water ________ 70% of its surface, appears as a "blue ball". 

—My grandma decides to _______ her company to me after she is retired.—You must be under great pressure.

Nobody but doctors, nurses or those ______ by Dr. Hu ______ to enter the patient's room.

 ---Is ____ready for the party? ---Not yet. The desk hasn't been set.

 ______ by a greater demand of vegetables, farmers have built more green houses.