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1、.提醒年輕人網(wǎng)上慎重交友，很有必要。

Its necessary to warn the young people not to_______ online carelessly.

2、不要抱怨學(xué)校，你們可以解決這些問(wèn)題.

Don't complain about the school. You can_________ these problems.

3、必須采取措施來(lái)阻止此類事故發(fā)生

_______he done to stop this kind of accident from happening.

4、人們稱贊這部根據(jù)中國(guó)歷史上一個(gè)真實(shí)事件創(chuàng)作的歌劇

People _______of the opera which is based on the real event in Chinese history.

5、我想讓老師和父母為我而自豪

I want to make my parents and teachers be ______me.