All you need to know about English prepositions to pass exams such as KET, PET, TOEFL and IELTS.
There are 9 sections, each with an explanation and a practice test.
There are more than 90 practise questions in this app:
Prepositions of time
Prepositions of place
Prepositions of movement
before / after
for / since / ago
from / while / during / to
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