【題目】If humans don't stop polluting, they will be ________in the future.

【題目】In order to protect ourselves, we should keep our________information safe.

【題目】— I haven’t got a mobile phone.

【題目】—What do you think of Tom’s work?

【題目】The little boy o________ his seat to an old lady on the crowded bus this morning.

【題目】As students, we should be r________for ourselves. We can’t spend much time playing computer games.

【題目】Teenagers should be________ (鼓勵(lì)) to learn and spread Chinese culture.

【題目】The Chinese scientists’ ________ (成就) make the world shocked.

【題目】通常, 我們?nèi)粘；顒?dòng)中不太關(guān)注那些沒多大價(jià)值的事情。

【題目】我的老板原來在國外進(jìn)修過好幾年。