In this photo, the ducks _______ in the water. A. swiming B. are swimming C. are going to swimming
( ) The woman in green is__________ mother.
( ) Have you got ________ stamps from China?
( ) We say thank you ________ all the good ________ we have.
( ) The word “easy” is ________ than the word “difficult”.
( ) My brother_______ while he_______ his bike and hurt himself.