21 câu Tiếng Anh lớp 7 Unit 9: I often play games after school - Writing - Explore New Worlds có đáp án
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They had decorated the tree with colored balls.

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They had decorated the tree with colored balls.

Colored balls had been decorated under the tree.

The tree had been decorated with colored balls.

They had decorated colored balls and the tree.

With colored balls the tree had looked beautiful.

Giải thích

Đáp án đúng: B

Cấu trúc câu bị động thì quá khứ hoàn thành

S+ had been+ P2

Dịch: Cái cây được trang trí với rất nhiều quả bóng nhiều màu sắc