'Like' vs. 'as'

Here you can find the document and exercises on the use of 'like and 'as' along with the key.

Gerund vs. infinitive

Numerous exercises on gerund vs. infinitive along with their key are hereby made available for you to have access at your convenience.  You can also find the list of verbs used with gerund and/or infinitive here.
Here you can find more information and exercises on the same topic.

Make, do, get and have

Here you can find some information and exercises on the use of the verbs 'make', 'do', 'get' and 'have'.

Prepositions

Basic prepositions: Here you can find some exercises on basic prepositions.  The key to the exercises is hereby made available. (Source: English Grammar in Use: Intermediate by Raymond Murphy)

Noun, adjective and verb + preposition: Here you can find some exercises on nouns, adjectives and verbs which are used with certain prepositions.  The key for the exercises are also hereby made available. (Source: English Grammar in Use: Intermediate by Raymond Murphy) Here is a list of words with prepositions.

Phrasal verbs: Here you can find some exercises on phrasal verbs.  The key to the exercises is hereby made available. (Source: English Grammar in Use: Intermediate by Raymond Murphy)

You can hereby find a link for more online exercises on the topics above.

Position of adverbs

Here are the main rules and exceptions on the position of adverbs in sentences:

First rule: if there is only one verb in the sentence, the adverb comes before the verb as in the following example: He usually comes to work on time.
Exception to the first rule: if the only verb in the sentence is 'to be', the adverb comes after the verb as in the following example:  He is usually on time.

Second rule: If there is more than one verb in the sentence, the adverb comes after the first verb as in the following example: He has already arrived at work.
First exception to the second rule: if the first verb in the sentence is an auxiliary verb with 'to', i.e., have to, need to, ought to and used to, the adverb comes before the first verb as in the following example: He usually has to start working by 9:30 AM.
Second exception to the second rule: if the first verb in the sentence is a contracted negation, the adverbs 'probably', 'possibly' and 'certainly' come before the first verb as in the following example: He probably won't come to work on time.

These being the main rules and exceptions, there is more to this topic.  You can find more information on this webpage, which also provides you with some exercises. 

Here is another document with exercises on the same topic.  You can find the key for the exercises here.

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)

Wishes

Here you can find examples and an exercise with the key on wishes.