3 . 要想处于领先地位，你们必须严格要求自己。
____________, you must ____________.

5 . 从方框中选择恰当的词或短语并用其正确的形式填空(每个词或短语只能用一次)。

final, be tired out, take the lead, not decide, take up, twelve, by oneself, cross a road, lose one’s way, calm down

1. —You seem to have made great progress in English. Who helped you with it?
—Nobody, I learnt it ________.
2. We are often told ________ in face of danger.
3. —Jim, playing computer games ________ too much of your time.
—Sorry, Sir. I will spend more time on my study from now on.
4. Take a GPS with you when you go travelling, or you ________ in a strange place.
5. To celebrate my ________ birthday, my parents will take me to go camping in the nearby forest park.
6. —I called you last night, but there was no answer.
—Oh, I am sorry. I ________ after playing basketball for hours and went to bed early.
7. After years of searching, the police ________ found the lost boy and sent him back to his family.
8. —What’s your plan after graduating from college?
—I ________ yet. Maybe I will go abroad for further study.
9. —Look! Nora ________ in the running competition!
—Yes, she is good at running.
10. —Frank, you look worried. Anything wrong?
—My mum fell over and was badly hurt while she ________ on a rainy day.

7 . 尽管所有的国家应该共同解决全球气候变暖，发达国家需要带头而非缺席。
Although all the countries should solve global warming together, developed countries need to ________________________________.