More than thirty groups of are working to develop a vaccine for COVID﹣19.(scientist)
为了身体健康,你应该改掉熬夜的习惯.
To keep healthy, you should give up the habit of late.
我家对面有一个新建的广场,许多人在那里散步.
There is a newly﹣built square my home. Many people take a walk there.
咱们放学后去踢足球吧.
Let's after school.
Someone will show you around the village after lunch. It has changed much.(改写句子,句意不变)
You will around the village after lunch. It has changed much.
Grace often helps her mother look after her baby sister.(改写句子,句意不变)
Grace often helps her mother of her baby sister.