---Tom studies hard.Mary studies even harder.Jack hardly studies.Of the three, who studies the hardest? ---___ studies the hardest.
She is good ______ playing the piano and good ______ her students, which is good _______ the students.
Now that you have a job, you must exert (努力) yourself in ______ you do at work.
You should try to get a good night’s sleep ______ much work you have to do.
___________ your help, I got the first in the final-term English examination.
A middle-aged woman came ________ to the bus stop only ________ the bus had gone.