______you_____(see)my pen Yes,I______(see)it on the desk.
问题描述：
______you_____(see)my pen Yes,I______(see)it on the desk.
答
_Do_____you__see_(see)my pen ?Yes,I___saw___(see)it on the desk.
答
Do you see my pen ?yes i saw it on the desk .
答
Do，see，see
答
have, seen ,saw
答
Have seen saw