Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 có đáp án (Đề 4)
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It is only recently that ballets have been based on the themes American life.

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It is only recently that ballets have been based on the themes _____ American life.

reflecting

reflects

is reflecting

reflected

Giải thích

Chọn A