ys mobile internet devices are pushing up demands for online education, which makes people see it as one of the most____ new market.

Thank you so much ________ your advice.— It’s a pleasure.

__________ the students are doing theirmaths exercises with the help of the teacher.

The salesman showed her several bags and she chose＿＿＿one as she didn’t want to spend too much money on it.

The way you thought of _______ the math problem isgreatly creative .