—Dad, please tell me when Mum _____.I miss her very much.—She will return when she _____her task. And she will bring a nice present for you.
---He’s never been to an aquarium. ---_______.
Would you mind ______ those old jeans?
I have been skating _______ nine o’clock.
He _____ when the UFO arrived.
The teacher said that they ______ hard-working students.