Since nobody gave him any help, he ______ have done the research on his own.
I don’t want ______ like I’m speaking ill of my friend, but he always does not perform what he says.
The school _______ he once studied in is famous.
The doctor said there was ______ with her, but she could not help worrying.
. ___________ she was chosen made us very happy.
Ten years ________a long time in one's life.