The oranges taste well,do you think so?
My grandfather was used to smoke a lot.
The twin sisters have learned a lot after they came to China.
She didn't know why they looked at her in surprised.
參考答案:这是改完的,以及解析:
The oranges taste good,do you think so?
taste后面接形容词,不接副词
My grandfather used to smoke a lot.
"used to do sth."过去常常做某事
The twin sisters have learned a lot since they came to China.
"since"通常用于完成时
She didn't know why they looked at her in surprised.
"in surprise"惊奇地,固定短语