THE TEACHER HAS DONE HIS BEST TO HELP ALL STUDENTS. HOWEVER, NONE O...

45.The teacher has done his best to help all students. However, none of them made any effort on their part. A. The teacher has done his best to help all students, then, none of them made any effort on their part.

B. Although the teacher has done his best to help all students, none of them made any effort on their part.

C. Because the teacher has done his best to help all students, none of them made any effort on their part. D. If the teacher has done his best to help all students, none of them made any effort on their part.Read the following passage then choose the word A,B,C or D that best fits each of the blank spaces.More and more young people are ... (46) ... voluntary work abroad. The wild variety of jobs and destinationsavailable is making it an increasingly attractive option for those who have just left school and have a year freebefore university. Many choose to spend these twelve months working in poor countries. There they will earn little... (47) ... no money. But they will be doing something useful - and enjoying the experience. The work may ... (48) ... of helping the local communities, for example by helping to build new road or providewater supplies to isolated rural villages. Other projects may concentrate more on conservation or environmentalprotection. ... (49) ... kind of job it is, it is certain to be ... (50) ... and worthwhile, and an experience that will neverbe forgotten.