Đề kiểm tra học kì 2 Tiếng anh 12 năm 2023 có đáp án (Đề 20)

From 1865 to 1875, a remarkable variety of inventions A. was produced B. were produced

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From 1865 to 1875, a remarkable variety of inventions_________.

was produced

were produced

are produced

produced

Giải thích

Đáp án B