—Is Kate serious?—I________.She never mentions it.
He fell off the bike ________.
The students were all tired but ________ of them stopped ________.
—Can I see the headmaster at the moment, please ?—I'm afraid not. He ________ out. He ________ in 10 minutes.
Italy is famous for ________.
There __________ great changes in our hometown in the past fifteen years.