Whose book is this?—It must belong_________.

It’s time to say goodbye to my school. I’ll always remember the people ____have helped me.

Alice is wearing a __________ / waIt / skirt today.

Will you take D5581 or G7619 to Hangzhou? — G7619. I will have to more money, but it will much less time.

The children _______ a PE class on the playground when it suddenly began to rain.