Нужно сделать чтобы в каждом предложении на первом месте стоял глагол с ing окончанием, чтобы граматически предложения было правильным.

1. Staying in hospital is not very pleasant.  

2. Windsurfing properly is very difficult.

3. Speaking a foreign language is more difficuIt than reading it.

4. Walking on the grass is forbidden.

5. Swimming on my back is what I can't do.

6. Being polite to someone you don't like is difficult.

1Staying in hospital is not very pleasant.  

2Windsurfing properly is very difficult.

3Speaking a foreign language is more difficuIt than reading it.

4Walking on the grass is forbidden.

5Swimming on my back is an impossible thing for me.

6Being polite to someone you don't like is difficult.