--- Why does she leave a key to you? --- _______, I think.
--- What kind of house would you like? --- I’d like ______ with a garden in front of ______.
How can they learn anything ______ they spend all their spare time watching television?
The rain had cleared the air, and the grass ______ fresh and sweet.
Be careful to move the equipment --- ______ it gently.
As the Spring Festival is drawing ______, people are getting busier and busier.