20 câu Tiếng Anh lớp 7 Unit 1: What do you like to do - Vocabulary and Grammar - Explore New Worlds có đáp án
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Helen was painting a picture when her mum was cooking

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Helen was painting a picture when her mum was cooking

was painting

picture

when

was cooking

Giải thích

Đáp án đúng: C

When=> While

Helen đang tô màu cho một bức tranh khi mà mẹ cô ấy đang nấu ăn.