When _______ you _______ to learn to ride your bike？ — I really can’t remember the time.

We go to school_____ Monday _____ Friday.[ ]

Do you know who designed the CD-ROM Around the World in Eight Hours? — Yes. It ______ by Nancy Jackson.

I noticed them __________the bus ten minutes ago.

What does Jack’s father do? — He is a teacher. He_____maths at a school.