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 Ican’ttellwhentheTV

練習題3.18W

問題詳情:

 Ican’ttellwhentheTV

  I can’t tell when the TV______ exactly, but it must be very long ago.

     A. is invented  B invent  C. was invented  D. has invented

【回答】

C

知識點:動詞時態

題型:選擇題

標籤:ttellwhentheTV Ican