【推荐2】避免癌症的关键是拥有健康的生活方式。
The key to________is to have a healthy lifestyle.

【推荐1】The possibility of employing more staff is still______________(在讨论中). (根据汉语提示完成句子）

【推荐2】会上正在讨论的问题非常重要。
The problem _________   __________ at the meeting is very important.

【推荐1】Data about the moon’s ________ (compose) could help China decide whether its plans for a future lunar (月球的) base are practical. (用所给词的适当形式填空)

【推荐2】In Xi’an where history comes alive, you can visit________(像兵马俑这样的一些历史名胜). （根据汉语提示完成句子）

【推荐1】新旧更替的时代已经到来，在走向未来的过程中，我们不可能将过去的一切都保存下来。
There comes a time when the old must ________ ________ ________ the new, and it is not possible to ________ everything ________ our past as we move towards the future.

【推荐2】To acquire the skills he needed to become a professional artist took him a long time. （用it作形式主语改写句子）
________________

【推荐3】_________________（我突然想到）that I should buy a necklace for my mother as a birthday gift. (根据汉语提示完成句子)