Chuyên đề 18: Từ đồng nghĩa, từ trái nghĩa
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Population growth rates vary among regions and even among countries within the same region. A. fluctuate B. stay unchanged C. restrain D. remain unstable

38/50

Population growth rates vary among regions and even among countries within the same region.

fluctuate

stay unchanged

restrain

remain unstable

Giải thích

Chọn B