Modal verbs

Here you can find some information and exercises on modal verbs along with the key for the exercises. (Source: English Grammar in Use. Intermediate by Raymond Murphy)
Here you can find more exercises on modal verbs.

Past continuous and past perfect

Here are some mixed exercises with past continuous and past perfect in addition to the tenses we had seen earlier:

http://www.englishpage.com/verbpage/verbs3.htm

http://www.englishpage.com/verbpage/verbs4.htm

http://www.englishpage.com/verbpage/verbs11.htm

http://www.englishpage.com/verbpage/verbs12.htm

Schuman Square

Here you can find the webpage for the Schuman Square renovation.

Simple future

Here are some links for exercises on the simple future:

http://www.englishpage.com/verbpage/verbs18.htm

http://www.englishpage.com/verbpage/verbs19.htm

http://www.englishpage.com/verbpage/verbs20.htm

http://www.englishpage.com/verbpage/verbs21.htm

http://www.englishpage.com/verbpage/verbs22.htm

Comparative and superlative

Here you can find some information with exercises on comparative and superlative. Here is the key to the exercises.

Relative, -ed and -ing clauses

Here you can find some exercises on relative, -ed and -ing clauses along with the key.

Active and passive voice

Here you can find some information and exercises on passive vs. active voice.

Object and subject questions

Here you can find some information with exercises on subject vs. object questions.  Here you can have access to the key for the exercises.

Here you can have access to a webpage with more exercises on the topic.

Lean on Me

Here you can find the video of the song  called "Lean on Me" with lyrics.

Both irregular and regular verbs

Here you can find the short list of verbs, which can be used as both irregular and regular.

Simple past and present perfect

Here are some exercises on simple past and present perfect:

http://www.englishpage.com/verbpage/verbs5.htm

http://www.englishpage.com/verbpage/verbs6.htm

Used to

Here you can find some information and exercises on used to.

Present simple vs. present cotn. tenses

Here are the link for some exercises on the present simple and present perfect continuous:

http://www.englishpage.com/verbpage/verbs1.htm

http://www.englishpage.com/verbpage/verbs2.htm

State vs. action verbs

Here is  a document where you can find information and exercises on state vs. action verbs, along with key for the  exercises. (Source: English Grammar in Use: Intermediate by Raymond Murphy)

Here is a link for a webpage where you can find some  exercises on the same topic.   

Here you can find the list of verbs we have looked at. (Source: LONGMAN Advanced Learners’ Grammar by Mark Foley &  Diane Hall)