由于他的及时帮助，我们按时完成了任务。
_____ _ ______ _ his timely help, we finished the task on time.
新来的老师对我们的学习成绩非常满意。
The new teacher is very ____________ ____________our grades.
他们正在努力消除他们祖国的贫困。
They’re struggling to ____________ their motherland ___________poverty.
今天上午我偶然在校门口遇到了一位老同学。
I ____________ ____________ an old classmates of mine at the school gate .
众所周知，蔑视残疾人是不礼貌的行为。
As we all known, it’s bad manners to ________ __________ upon the disabled.