When the firemen arrived, the fire had been_______.
David often helps Sandy _______ her Maths, he also shares his school things _______ her.
--- Would you please _______ your storybook ________me? ---- Sure. Bit you must return it to me before Wednesday.
We talked _______ until Mr Wu asked us _______.
Shang Hai is larger than _______ in Jiangsu.
Thank you for______ let me_______ on the trip today.