Question

Mark needs to learn Chinese ______ his company is opening a branch in Beijing. 

A．unless

B．until

C．although

D．since

Answer 1

D

试题分析：句意：马克需要学习汉语，因为他的公司正在北京开一个分公司。A除非；B直到；C尽管；D因为。故选D。