Question

【题目】_____ I make a promise to help others, I will manage to complete it.

A. Although B. Once C. Unless D. Before

Answer 1

【答案】B

【解析】考查从属连词辨析。句意：一旦我承诺帮助他人，我会设法成功地完成承诺。although虽然；once一旦；unless除非，如果不；before在……之前。故选B。