For ____ interested in getting on line, the school offers an Internet bar.

One of them hasn't prepared __ lessons very well.

—Excuse me, but can you tell me which road I should take to the post office?— __________ of the four roads will do.

Haze (雾霾)appears around us. Let’s do ________ helpful to protect the environment.

Kate’s reading is better than ___ in the class.