[ Infinitive and Gerund ]
It is quite difficult ____________ how they did that.
A. imagine
B. to imagine
C. imagining
Select your answer:
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Other quiz:
Verb Tenses › ViewThe team (wins/won) the championship after a hard-fought match.
A. wins
B. won
Past Continuous › View
What __________ doing when I saw you?
A. are you
B. were you
C. did you
D. do you
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