–What did your parents think about your decision?–They always let me do _______ I think I should.
Cao Cao’s tomb is reported ______ in China, which attracts nationwide attention.
With many forests being destroyed, huge quantities of good earth ______ each year.
This book is said to be a very special one, because it _______ many events not found in other history books.
For quite a few students, their teacher’s advice is more important than ___ of their parents.
Some scientists believe that it won’t be long _______ robots are widely used in all walks of life.