Question

【题目】Mark needs to learn Chinese________his company is opening a branch in Beijing.

A．unless

B．until

C．although

D．since

Answer 1

【答案】D

【解析】考查原因状语从句。根据题意，前后之间为因果关系，因为要开分公司，所以需要学习汉语。答案选D。