With the word “PM2. 5” constantly __________ in media reports, you might be wondering what on earth it means.
Life is a journey ________ with hardships, joys and special moments.
A hearty laugh relieves physical tension, ________ your muscles relaxed for over half an hour.
The lady was so absorbed in her job that she didn't hear a customer ________ at the door.
Over 200,000 hotel reservations were made in Hong Kong through Taobao last year, ________ it the most popular travel destination among Chinese netizens.
According to the new law, the people found ________ “harmful” advertisements on the streets will be punished strictly.