The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—- Oh, dear! She _______ a lot of difficulties!

__ number of people who___ killed or injured reached more than 400,000.

Tom is the only one of thestudents who a scholarship since lastyear.

I can play volleyball. And I watch volleyball games _______ TV every day.

Must I return the book this week—No, you You can it for 15 days．