What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine(疫苗) is tried on volunteers.
Her dress was spotlessly clean and well made,but it was______kind of ______dress which the daughter of a poor man might have worn.
I don’t usually have______breakfast,but I always eat______good lunch.
—Have you seen Mike? —I just saw him in the______.
—Where did you spend last weekend? —At______.
Some friends tried to settle the quarrel between Mr.and Mrs.Smith without hurting the feeling of______,but failed.