单选题 In today’s digital age, people are increasingly ______ on smartphones for communication and daily tasks.( )

单选题 The government has introduced new policies to ______ the development of renewable energy industries.( )

单选题 The old building, which ______ the 19th century, is now being restored to its original appearance.( )

单选题 The professor’s lecture was so ______ that most students found it hard to stay focused till the end.( )

单选题 The research team ______ a major breakthrough in the treatment of lung cancer after five years of hard work.( )

单选题 The company has launched a new recycling program, aiming to ______ waste and promote environmental sustainability.( )

单选题 It is widely believed that regular exercise ______ not only physical health but also mental well-being.( )

单选题 Despite the team’s best efforts, the project failed to meet the deadline due to ______ unforeseen technical issues.( )