It’s necessary for us           to our parents when we have problems.

It’s necessary for us        English well.

It is not safe          children to be too close to bees. Bees have painful stings they use in their defense (防御).

—Did you have any difficulty in today’s homework?
—No, in fact I found                  .

It’s very nice         pictures for me.

I find        difficult to finish the work on time. We only have three hours left.

Our parents advised us         out alone at night because it was dangerous.

She finds        interesting that many foreigners are interested in Chinese.

I find          hard to finish the work in such a short time.

It’s important       how to do chores.