___ difficult the task may be, wemust finish it on time, because we can’t meet such a precious opportunity_______ we have expected

Young people go to college with theexpectation that ______ educated people get a higher pay

We have four classes in the morning, and ______ every two classes, there is an interval, ______ we can have a short break.[ ]

If you have any difficulties, please do not________to contact our Customer Service Department. [ ]

afraid of making mistakes,the little boy____answer his teacher’s question.