When we heard the news that Beijing Basketball Team has won the final, we sang and danced ________ joy.
______ is the kindness of the nurse that the patient can never be _______ to her.
Since nobody gave him any help, he ______ have done the research on his own.
I was wondering what to do with my car which won’t start ______ a kind man offered to help.
---Why does Peter look upset?--- He is a newcomer to the class and is having difficulty ______ by his classmates.
Her question was so difficult that I could hardly make any _______ of it at all.