11/ After (read) reading this article you will give up (smoke) smoking

12/ Is there anything here worth (read) reading?

13/ She promises (wait) to wait for me.

14/ Would you mind (put) putting your pet snake somewhere else ?

15/ I don't feel like (work);working what about (go)going to a disco instead?

16/ He taught me how (light)t light a fire without matches.

17/ By (work) working day and night he succeeded in (finish) finishing the job in time.

18/ The sea was too rough for the children (swim).to swim

20/ He tried (explain) to explainbut she refused (listen) to listening