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13,  A strange man was seen in my garden yesterday.
14, The floor is cleaned everyday.
15, The problem will be solved soon.

10,  English has to practiced everyday.
11, The garbage will be taken out of the city.
12, This bicycle hasn't used for a long time.

10. English has to be practiced by Lan every day.
11. The garbage will be taken out of the city ( by them).
12. This bicycle  hasn't been used by her for a long time.
13. A strange man was seen  by me in my garden yesterday.
14. The floor is cleaned every morning.
15. The problem will be solved soon.