800 câu trắc nghiệm Điền từ Tiếng Anh có đáp án - Phần 19

In speech, the coding system is the language like English or Spanish; the convention that one person speaks at a time may seem too obvious to mention. In fact, the signals (3)_____ in convers

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In speech, the coding system is the language like English or Spanish; the convention that one person speaks at a time may seem too obvious to mention. In fact, the signals (3)_____ in conversation and meetings are often (4)_____ .

That people use

Are used

Using

Being used

Giải thích

A là đáp án đúng