Bộ 40 đề thi Tiếng Anh vào 10 có đáp án - Đề 28
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Read the following passage, then choose the correct answer to questionsToday, supermarkets are found...

23/40

But the first supermarket (23)_________opened only fifty years ago.

is

has been

was

were

Giải thích

Đáp án C