[ Grammar ]
_____ when haven’t they seen each other?
A. For
B. On
C. Since
Select your answer:

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Past Simple › ViewChoose the correct question form. ______ she eat for breakfast?
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Prepositions of Time › View
Explain the usage of ‘while’ as a preposition of time.
A. ‘While’ signifies the reason behind an action.
B. ‘While’ is used to indicate that an action takes place at the same moment of another one
C. ‘While’ denotes the location where an action takes place.
D. ‘While’ is used to express contrast between two actions.
