__________ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
We should go to school by bus or underground rather than by car global warming.
—Now, where is my key? —! They are waiting for us at the school gate.
The teaching building in the big earthquake was our chemistry lab.
He knows little English that he has never been offered an job.
He looks forward with great interest the 2010 Shanghai Expo in the summer holiday.