Before you pay a visit to a place of interest, look in your local library _a book about it.
It was amazing that the army _______ its homeland against all enemies.
What people like to eat is subjective, but ______ the northerners like dumplings while the southerners are fond of rice.
Your are ______ to suffer from bad health if you keep smoking.
Nuclear science should be developed to benefit people _______ harm them.
This problem may _______ more serious ones if left unsolved.