If I have extra pens, I always ....................... them to other students.

When you're finished reading the book,……you lend it to my cousin, please?

You need ---------- of money to buy all the books for this course.

Which sentence is correct?

I .....for the lecture to start for almost an hour. I don't know why it is delayed.

Children can fly alone on international flights ..................... they’re at least six years old.