With the word “ PM2.5” ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
It has been confirmed____________he wasn’t the person who stole your bike.
. He is clever and has a____________for learning language.
The storm is moving slowly____________.
. He made up his mind to devote his life____________the river____________polluted.
. Many people think that it is ____________making such an experiment.