4- To readReadingRead� is an excellent way to learn new words.

5- I am sorry I couldn't�returnreturningto return���your magazine to you on time.

6- You'd better�finishingto finishfinish your homework quickly because supper is almost ready.��

7- She went on writingwriteto write�about the film.

8- I prefer to sendsendingsend�e-mails than writewritingto write�long letters.

9- It is nice to sitsittingsitdown for a while and enjoy a good film.