I'm young. I'm only seven ______.A.years olds B. year olds C. years old
Doctors say we need more fruit and vegetables to be ________ because _______ is very important.
--- __________your twin sister’s name Sandy? --- Yes, _______ is.
单词辨音
---Happy New Year, Kitty. ---
---Look, there ____________ a pair of shoes under the sofa. ---Oh, yes. The shoes ____________ mine.