下列括号中对句中加点的词的解释，完全正确的一项是（ ）

.You can’t complain of being lonely__________ you don’t make an effort to meet people and make friends with them.

To keep Chinese economy going on, the government has established an employment service system for _____ jobless urban residents, and for older laid-off and unemployed persons.

She speaks English fluently _____ she were a native American.

Never in my dreams Zhao Benshan’s performance during the CCTV Spring Festival Gala was considered the best