( )(1)当你向别人介绍海伦是你的妹妹,可以说:A. This is Helen B. Helen is my sister.
A: _______her school bag ? B: It's in the desk .
A: _______ you like _______ bike ? B: Yes, I do.
A: Do you like _______? B: No, I _______.
A: Is that _______ kite? B: Yes, it is.
A: _______ that on the desk ? B: It's a photo.