The police can’t decide whether the suspect is guilty because he could prove he was________ at the time of the crime.

下列各句中，标点符号使用正确的一句是

_______ your father at home now-Yes, he is. He_______ TV.

g took steps to limit the kinds of high-risk ofborrowing money from the banks that can create the high price of housing,______ happened in the United States

They set off________a trip________London