13.Air travel is faster than any other kinds of trasport. Air travel is the…………………………………………

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1. Giải đáp:

   13.  Air travel is the fastest transport.

   – So sánh nhất : S + be + the short adj-est / most-long adj + O.

   14.  Recycled plastic is used to make toys.

   – HTĐ ( CBĐ ) : S + is / am / are + V3 / VpII ( by + O ).

   – Recycled plastic là chủ ngữ số ít -> Dùng is

   15.  I haven’t played tennis since  1990.

   – The last time + S + V2 / Ved + O + was / were + time.

   = S + haven’t / hasn’t + V3 / VpII + O + ( since + mốc thời gian / for + khoảng thời gian ).

   Trả lời