More than thirty groups of are working to develop a vaccine for COVID﹣19.(scientist)
Eating too much salt (增加) the risk of high blood pressure.
It's d for people to use the mobile phone while crossing the street.
﹣Cindy, what kind of restaurants do you like ?
﹣I p restaurants that can provide customers with free Wi﹣Fi.
Andrew was crazy about DIY, but he always made his room dirty and . (tidy)
To our surprise, an 8﹣year﹣old girl became the of the dancing competition. (win)
My grandparents live (peace) in the countryside and they like the life there.
Now more and more people like the in the countryside. (silent)
Mary doesn't (real) care if her friends are the same or different.
On Teachers' Day, students usually make cards to thank teachers. (they)
We should take action to protect animals in (dangerous).
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