用括号中所给词的适当形式填空。
[[QOrDeR]]We ________ back this morning.
【小题2】Xiaohai is their ________ friend.
【小题3】We ________ to school by bus yesterday.
【小题4】I didn’t buy ________ eggs.
【小题5】We ________ his sister that day.
【小题6】Did you make a ________ list first?
【小题7】Let’s buy two ________ of chocolate.
【小题8】Here ________ your books.
【小题9】We’ll ________ a picnic in the park.
【小题10】How many ________ do you want?