Đề thi học kì 1 Tiếng Anh 11 Global Success có đáp án (Đề 8)

What had happened to the giant panda by the 1980s?

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What had happened to the giant panda by the 1980s?

There had been a considerable fluctuation in their populations.

There had been a dramatic decrease in their populations.

Their population had greatly increased.

Their populations had remained stable.

Giải thích

Choose B