Viết lại các câu sau sao cho giữ nguyên ý nghĩa

viết lại các câu sau sao cho giữ nguyên ý nghĩa
1, The police let him leave after they had questioned him
=>He was
2, I haven't seen that man here before 
=>it's
3, The furniture was so expensive that i didn't buy it
=>the furniture too
4, I'm always nervous when i travel by air
=> Traveling