They _______ two free tickets to Canada, otherwise they’d never have been able to afford to go.[ ]

To finish the task, we’ve tried three times, and after dinner we’ll try _________ time.

have leading experts in this field, and that’s ____ they’ve made important progress.

e’s house in the downtown area is much smaller than ours , but it is twice_______ expensive

Study hard, ______ you’ll pass the exam.