_____ has been introduced to the students to help them make progress.
________ the help of her teacher, Mary ________ in the past few months.
—Tom has passed the final exam.—______! He never really worked hard before.
In China, shaking hands with each other is a common________ when people meet for the first time.
________ lack of interest, Tom kept trying hard to catch up with others.
As far as I see, ________ is no possibility ________ he will win the tennis match this time.