879.----Was his father very strict with him when he was at school?

----Yes. He had never praised him _____he became one of the top students in his grade.

　　 A. after　　 B. unless　 C. until　 　　D. when　　　

878. Sally worked late in the evening to finish her report _____her boss could read it first thing　 next morning.

　　 A. so that　　 B. because　 C. before　 D. or else　　　　　　

876. Mr. Hall understands that _____math has always been easy for him, it is not easy for the students..

　　 A. unless　　 B. since　　 C. although　　 D. when　　　　　　

875. ----Would you like to come to the dinner party on Saturday?

----Thank you. I’d love to, _____I’ll be out of town at the weekend.

　　 A. because　 B. and　 C. so　 D. but　　　　　　　　　　　

874. ---I think it’s going to be a big problem.

---Yes, it could be.

---I wonder ____we can do about it.

　　 A. if　　 B. how　 C. what　 D. that　　　　　　　　　　　　　 　　　

873. John shut everybody out of the kitchen ____he could prepare his grand surprise for the party..

　　 A. which　 B. when　 C. so that　 D. as if　　　　　　　　　　　　　

872.The film brought the hours back to me ____I was taken good care of in that far-away village.

　　 A. until　 B. that　 C. when　 D. where　　　　　　　　　　　　　

871. After the war, a new school building was put up____there had once been a theatre.

　　　 A. that　 B. where　　 C. which　 D. when　　　　　　　　　　　　　

870. The train leaves at 6:00 p.m. So I have to be at the station____5:40 p.m at the latest.

　　　 A. until B. after　 C. by　 D. around　　　　　　　　　　　　　　

869. ____　 journalism seems like a good profession, I would prefer to be a teacher.

　　　 A. Although B. Even　 C. No matter　 D. Now that