Đề thi cuối kì 2 Tiếng Anh 8 Global Success có đáp án (Đề 8)

An airline company has introduced a new system (2) _______ 'Meet & Seat'.

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An airline company has introduced a new system (2) _______ 'Meet & Seat'.

which called

calling

was called

called

Giải thích

Đáp án đúng là D