I have tried to solve the problem, but it is so difficult that it ___ not only me but also my friend.
The chairman declared that ________ player scores the highest number of points would be the winner.
A part of the theme park is _________ life in ancient China .
The up-to-date information together with opportunities for hands-on learning makes the world _______ in a completely new way .
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.