You can’t imagine what trouble I had _____ this English article into Chinese.
Interest is as vital to learning as the ability to understand, even ________ so.
He was about to do his homework when an unusual noise ________ his attention.
—You seem to be familiar with New York.—I _______ there for three years.It’s great to be back.
—These grapes look really beautiful.—They _______! See the price $3.99 a pound.Very expensive, aren’t they!
It is typical of students to stay up ________ deep into the night for the final exam.