–How often do you visit your grandparents, Tom? --__________.
―What a heavy rain!―So you’d better _________ swimming today.
―How soon ________ your brother ________ back from Guangzhou?―In two weeks.
Jack does his homework ________ Mary. So they both always get good grades in the exams.
You can’t get in. The exam _________ for over 30 minutes.
I ____ an expensive gift for my birthday, but I could not ____ it.