500 câu trắc nghiệm giới từ trong Tiếng Anh có đáp án cực hay - Phần 14

Where is Jimmy? – He is ________ work. He is busy _________ his monthly report.

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Where is Jimmy? – He is ________ work. He is busy _________ his monthly report.

at/ with

at/ at

at/ to

on/ with

Giải thích

Chọn A

at work: đang làm việc
be busy with: bận rộn với