Question

请学霸帮忙完成这道英语题 谢谢啦

Answer 1

1. Mary studies hard, while his little brother Tom plays all the time.

2. The design of the product has been improved, while the quality is still disappointing.

3. The girl managed a sweet smile on her face, while she was bleeding deep inside.
   

Answer 2

都只需要把句号改成逗号，在第二分句前加while.
能理解吗？不懂再问。
祝你进步！

Answer 3

就是在前后两句话之间加一个while，形成转移啊。加一个逗号，加一个while，就可以了呀。