单选题 ______ Mr. Bingham's promotion became official, many of his colleagues have approached him to congratulate him.

A、 Despite
B、 Still
C、 Since
D、 During

【正确答案】 C

【答案解析】Mr. Bingham's promotion became official结构完整，因此横线处应填入从属连词。备选答案中只有(C)Since(自从)是从属连词。当备选答案既有介词也有连词时，可观察横线后跟的是名词短语还是具有完整结构的句子，用排除法判断答案，可以节约解题时间。