根据汉语意思完成下列句子。 1. 他不可能在家,因为他去了北京。 He ______ ______ at home, because he ______ ______ ______ Beijing. 2. 他们看见一个男人在跑步,他可能是为了锻炼。 They saw a man ______, he ______be running for exercise. 3. 出门在外要当心钱! ______ ______ ______ your money when you are out ! 4. 我想这本《英汉词典》应该是的。 I think the Chinese-English dictionary ______ ______ ______ Deng Wen. 5. 警察搜查了,但未发现任何奇怪的东西。 The police had searched the house, but didn't ______ ______ __ .