他们开始做某事来准备晚餐。

They start to do something to prepare dinner.

我们开始做某事时，天已经黑了。

It was already dark when we start to do something.

她决定开始做某事来改善她的健康。

She decided to start to do something to improve her health.

每天早晨，我开始做某事来保持清醒。

Every morning, I start to do something to stay awake.

孩子们开始做某事来完成他们的作业。

The kids start to do something to finish their homework.

开始做某事，故选B。

B start doing sth.

从现在开始做某事，直到将来。

To begin doing something from now until some unknown time in the future.

一旦你开始做某事，你就必须做到底。

I'd like to start by doing.

都是开始做某事

Set out to do sth, set off doing sth

解梦：机场代表了开始做某事的能力。在机场被耽误说明出现了外部的困难或是自己对某事感到焦虑。

What It Means: Airports represent your ability to embark on something. Getting delayed may represent exterior obstacles or your own anxieties.