The problem is so difficult that no one has been able to solve it so far.
A.just now B.up to now C.from now on
— The story in the film Better Days takes place in a high school.
— I have seen it. It has achieved big success.
A.appears B.happens C.works
—Do you know how to operate the machine?
— Sorry, I don't know.
A.make ... work B.make...stop C.make...see
They spent four days touring around the country.
A.riding B.playing C.travelling
— What’s a true friend like in your opinion?
— I think friends should always help each other. If my friends have difficulty, I’ll do my best to help them.
A.trouble B.suggestion C.difference
— How are you feeling today, Sara?
— Much better. You don’t have to worry about my illness.
A.ability B.disease C.mistake
