With the word “ PM2.5” ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
Although at times learning to play the piano Was tiring for me,it was well worth he_______.
一What’s the problem with your mountain bike Thomas? 一 _______.I can manage it and catch up with you
I always take something to read when I go to the doctor’s ___________ I have to wait.
Prices of daily goods ___________ through a computer can be lower than store prices.
Courage is a kind of quality --- and that’s __________it takes to face the challenges in life.