Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out ________ all the excitement is about.
The manager told the assistants to _______ all the customers’ names and address.
--- Have you finished the book? --- No, I’ve read up to _______ the children discover the secret cave.
He was late for the meeting _________ the heavy snow.
They tried to convince her _______ his innocence.
We can never expect ______ bluer sky unless we create _______ less polluted world.