We were ………decorating living room, when our guests from Chicago arrived, a week early
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piling it thick on
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thick and fast
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thick on the ground of
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in the thick of
D
Correct answer
Explanation
In the thick of means to be in the middle of an activity or deeply involved in something. They were in the middle of decorating the living room when guests unexpectedly arrived. Piling it thick on means exaggerating, thick and fast means rapidly or frequently, and thick on the ground means abundant or plentiful.