When do you think ______ start the new attack?

During the tourist season, there are many people wandering in this city to see the old castles _____ in the sixteenth century.

______ which way to take, the little boy behaved like a real gentleman who comforted his sister from time to time.

He doesn't know what to say, for it is the first time that he ______ with a girl.

There were many more people who got injured in the big fire than _______.

There were many more people who got injured in the big fire than _______.

This robot is supposed to save a lot of labor, but it remains a problem if it ______.

George applied for the position three times ______ he finally got it.

With his eyes ______ on the family album, he thought of the fun he had when he lived with his parents.

Postage ______, the necklace will cost you at least 650 yuan.