Grammar

Lesson 1 - Hygiene

• Gerund and infinitive use

http://www.englishpage.com/gerunds/index.htm

Lesson 2 - Ireland

• Modal Verbs   

http://englishpage.com/modals/interactivemodal1.htm

Lesson 3 - Help The Homeless?

• Phrasal Verbs and Idioms   

 http://www.english-test.net/esl/learn/english/grammar/ai006/esl-test.php

Lesson 4 - Terrorism 

• Past Unreal Situations; Third Conditional 

http://www.englishpage.com/conditional/conditional4.htm

Lesson 5 - The Penny Drops

• Subject - Verb Agreement 

 http://www.chompchomp.com/hotpotatoes/sva01.htm