What lessons China can draw from ____global financial crisis has become____hot topic among us students.
--- You did very well at the meeting, Black. --- Well, I regret ___________ that to the boss.
--- What do you suppose made her worried? --- _________ a new cell phone.
One third of our school _________ covered by trees, while the majority of our students ________ girls.
People in China don’t like hugging each other when meeting, which _________ a common __________ in some European countries.
___________, the northerners are fond of dumplings while the southerners are fond of rice.