Everyonehopesthatwecandosomethingtomakethingsbetter,sowecan'thelp______underthestress.
Tina _____ have known the truth, or she would have told us.
______ which way to take, the little boy behaved like a real gentleman who comforted his sister from time to time.
No matter how frequently _____ the works of Beethoven always attract a large number of people.
Professor Wang , _______ for his informative lectures, was warmly received by his students.