I get sick of sitting there and doing exercises again and again.

我厌倦了坐在那里一遍又一遍地做练习。

His doing exercises in the morning has never stopped for a single day.

他每天坚持晨练，雷打不动。

First, i must keep doing exercises.

首先，我必须保持做运动。

Insist on doing exercises, stronger immunity.

坚持体育锻炼， 增强身体免疫力。

By doing exercises, we can always stay healthy.

借着做运动，我们能够始终保持健康。

All in all, doing exercises is absolute necessary.

总之，锻炼是绝对有必要的。

Now you see more people doing exercises to keep fit.

你可以看到更多的人锻炼身体以增强体质.

My father keeps fit by doing exercises every morning.

我爸爸每天早上做操保持健康。

We are doing exercises on dividing sentence elements.

我在做划分句子成分的练习。

The teacher had us doing exercises all the afternoon.

老师让我们做了一下午练习。