【简答题】按要求改写句子。 1. This is a pen. (变成复数句子) __________________________________________________________________________ 2. There are seven boys in the picture. (就画线部分提问) _______________________________________...
【简答题】请将下列句子单复数互换。 1. This is a butterfly. ___________________________________________ 2. Those are white sheep. ___________________________________________ 3. This is her child. ___________________________...