Change the sentences into passive voice: The secretary often locks the ofice every morning

change the sentences into passive voice
1,the secretary often locks the ofice every morning
2,we must do our homeword now
3,they gave that letter to me
4, mis hong teacher us english
5,they dried the beans in the sun
6,he discovered aspirin in 1889
7,the french presented the statue of liberty to the american in 1886
8,an earthquake destroyed the town
9,he didn't type the letter las night
10,they will pick me up at my house