Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions from 1 to 15 E-mail allows people _________ in touch, regardless of distan

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Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions from 1 to 15

E-mail allows people _________ in touch, regardless of distance.

to staying

to stay

staying

stay

Giải thích

Kiến thức ngữ pháp:

Tạm dịch: Thư điện tử cho phép con người giữ liên lạc, bất kể khoảng cách.

Chọn đáp án B