PREPOSITIONS OF PLACE: "AT" "IN" AND "ON", DIFFERENCES AND PRACTICE!

Do you know the difference between: "She's in the library and she's at the library?"
The difference between use of these prepositions can be difficult to understand, but, to help you, here's a great explanation, followed by an exercise.

PREPOSITIONS OF PLACE: "AT" "IN" AND "ON", DIFFERENCES AND PRACTICE! 

 

PRESENT PERFECT LEVEL 1

If the present perfect is new for you, you can try the following exercises to learn it:

First read this explanation about the form of the present perfect, after that, read about how to use this tense

Positive: Exercise 1

Negative: Exercise 2

Questions: Exercise 3

And to achieve a perfect command of the present perfect, do both tests:

Test 1

Test 2