Great changes __ in the city in the past 20 years, anda lot of factories ____.

I saw a boy _______ in the street thismorning, so I went to ask what was the matter.

Jack often plays soccer ______ three o’clock _____ Saturday afternoon..

s the matter with Della— Well, herparents wouldn’t allow her to go to the party, but she still __

－__________ are you always staying up so late these days－To prepare for my final exam.