Envy is a ____(普遍的,全体的) weakness of people.
I can't connect my computer to the Internet. There must be ______ wrong with it.
Results of not enough sleep
harm your problem-solving ____
____ your heart
lead to ____sleepiness
Ways to get better sleep
limit wine drinking ____ to bedtime
get ____ minutes of sunlight
19世纪60年代,通过自上而下改革走上资本主义道路的国家是( )