it is difficult to do

We are trying to keep things under wraps, but it is difficult to do it sometimes.

Past experience indicates that it is difficult to do well in this course if you do not attend class on a regular basis.

They sometimes think it would be easier to cut loose the friendship, but they have such deep ties, that it is difficult to do so.

Enjoy, it is difficult to do, you pay only from the heart, will enjoy the same sense of fun.

Obviously, in the actual situation, it is difficult to do like this.

Not to material happiness, not to have compassion, in short, it is difficult to do.

But for non-symmetrical structures, it is difficult to do precise calculation of their natural characteristics and coupling.

Where it is difficult to do so, it shall be apportioned to the relevant combinations of asset groups.

It is difficult to do because technology is seen as almost the antithesis of spirituality.

The Chinese government regards the Nobel laureate as a charismatic figure with whom it is difficult to do business.

It is difficult to do with her.

Granted that in today's economy it is difficult to do so, but you always have options.

It is difficult to do sth.

I think it is difficult to do everything well.

I think it is difficult to do anything well.

I know that my own it is difficult to do, so I rarely promise.

Because it is difficult to do two courses?

It is difficult to do the job.

Do one thing a day is easy to adhere to adhere to two days is also very easy, but it is difficult to do every day.