Is it that you often play computer games ________ worries your parents?

Long time no see. Haven’t you graduated from college—Yes. I ______ Social Science for 4 years in Shanghai.

Dale is studying in_______university and he wants to be______engineer.

The suspect’s fingerprint printed on the gun was themain __________ against him

The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.