精选优质文档-倾情为你奉上语法练习-并列连词 一、选词填空(单句选词填空)(共14小题;共14分) 1. He was looking for a suitable job all the time, (yet/unless) he has failed. 2. The day broke, (for/while) birds began to sing. 3. - How is he getting on with his job hunt?- He was looking for a suitable job all the time, (yet/unless) he has failed. 4. He must be badly il