It’s no easy task to catch a ticket on a website that receives 1 billion clicks daily.—I can’t agree with you more.There ________ be errors for every single step.

He used to _____ games on the Internet, but now he is used to _____ a walk after supper.

umn, _________ the weather is often cool and fine, people living in the city always like climbing hills for outdoor activities to strengthen their health．

It was said that they _____ for twenty-five years

Our school is going to hold the _______ Culture Festival.—I see. And we can take part in ________ activities.