It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.
How long have you __________ this book?
The mobile phone has influenced people's life a lot since it __________.
-What do you think of the young woman singer?-It's hard to say, but her voice __________ beautiful.
To his surprise, Jack got a low __________ in the final exam.
He practices __________ English every day.