Major airlines have -. been using self-serve ticketing systems to reduce wait times A. increases B. increasing C. increased D. increasingly giúp

Question

Major airlines have ..... been using self-serve ticketing systems to reduce wait times A. increases B. increasing  C. increased  D. increasingly  giúp mình với giải thích giùm mình nghen,

hoaiphuong · Answer

Major airlines have ..... been using self-serve ticketing systems to reduce wait times A. increases B. increasing  C. increased    D. increasingly        bổ nghĩa cho động từ d&ugrave;ng trạng từ

aihong · Answer

`text(&rarr; Đ&aacute;p &aacute;n: D - Increasingly)`   `text(V&igrave;:)`   Vị tr&iacute; đứng của ADV&ndash;nhấn mạnh:   Have +    ADV    + been + Ving

Major airlines have -. been using self-serve ticketing systems to reduce wait times A. increases B. increasing C. increased D. increasingly giúp

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